It means nothing because it is not a whole number.
7675875870 itself is a whole number. A mean is an average, a single number is the mean or has no mean however you look at it.
What exactly do you mean when you say "the opposite of a whole number" . . .
A whole number is a number that has no fractions or decimal places attached to it. 21 is a whole number. 3.75 is not.
If you mean the whole number, it is 3
The sum of any two whole numbers is a whole number.
You incorporate the fractional remainder into the mean. The mean does not have to be a whole number.
If you mean 21517 then it is an integer because it is a whole number. If you mean 2.1517 then it is not an integer because it is not a whole number.
It means that the whole number can be divided by aanother whole number without a reminder
Assuming you mean rounded to a whole number the answer is zero (0)
If you mean 90% of the whole number then the number is 70 because 90% of 70 is 63
It is a number of inches where that number is an integer.
A line over a whole number means that number repeats for an infinite number of times.