112
224
336
448
check digit
There is no THE 80 digit number - there are 9*1079 of them and each one of them has a differen name just as 11 and 12, both 2-digit numbers, have different names.
1234567890
96
29
The name "24-digit number" is just fine.The name "24-digit number" is just fine.The name "24-digit number" is just fine.The name "24-digit number" is just fine.
208
Just that - a 26-digit number. There is no special name for that.
208
We generally refer to them by the number of digits. Two-digit number, three-digit number, etc.
two- digit modifier
check digit
digit
It is called a twelve-digit number. Its exact name will depend on the number.
infinity
symbol of number= #
undecillion