121111267121 of them, unless you're counting digits, in which case there are seven.
Two.
A number that has more than two factors is a composite number whereas a number that has only two factors is a prime number.
as many as the number of fingers on his two hands
The number 47 has only two factors, which are 1 and 47.
36
Two.
Two of them
Two of them.
25 times
The atomic number of the element Helium is two.
23 is a prime number. It has two divisors.
There is no such number because they are infinitely dense. Between any two numbers, there are infinitely many numbers. And between any two of them there are infinitely many.