2) Males would have an advantage when having to count to 17.

I think you mean either 11 or 10,001

Obviously, I was translating from the divine numerology to the more common ver-num-cular.

But, since you asked, I will point out that neither of those is correct. The proper number would be "two octred and one" in base octred, 21_{10}, or simply 21. Bi-thumbery representation (10,001_{2} in this case) is used by computer professionals, but becomes unwieldly for large numbers in general use. Natural counting of course uses all octred thumbs on your two hands. Only heathens would base a counting system whose base requires the removal of one's shoes.

21_{8} I assume? Also what's an octred?

I was talking in character for a quad-claw.

Speaking out-of-character...

The natural base in any alternate universe is always base 10, it's just that not all 10s are created equal. For human-base-10, the digits are 0, 1, 2, 3, 4, 5, 6, 7, 8 & 9 for a total of 9+1=10 digits. For quad-claw-base-10 (or Simpsons-base-10), the digits are 0, 1, 2, 3, 4, 5, 6 & 7 for a total of 7+1=10 digits. For Double-Captain-Hook-base-10, the digits are 0 & 1 for 1+1=10 digits. For Octopus-hand-base-10, the digits are 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, A, B, C, D, E & F for F+1 = 10 digits. Humans might call each of those base 10, 8, 2 and 16, respectively, but each of those people would natively call their own system base 10.

And what's an "octred"? In our English base-10, we have names for the powers of 10; ten, hundred, thousand, ten thousand, etc. I wanted to have an in universe name for the second power of 8 that was neither "eight" nor "ten" to more clearly establish that this was a different numbering system, so I merged an "octo-" with a "-red". I nearly went with "octen", to pattern it as "octen", "octred", "octand", "octen octand", etc., but I wasn't sure if that would have been clear enough. Apparently this still wasn't as clear as I thought it was.

Ah, well. 5 of one, half a drizzen of another.