7908908408020 has 24 divisors (see below), whose sum is σ = 16629237613800. Its totient is φ = 3159652895232.

The previous prime is 7908908407943. The next prime is 7908908408029. The reversal of 7908908408020 is 208048098097.

It can be written as a sum of positive squares in 4 ways, for example, as 1923663589444 + 5985244818576 = 1386962^2 + 2446476^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7908908408029) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 244387665 + ... + 244420024.

It is an arithmetic number, because the mean of its divisors is an integer number (692884900575).

Almost surely, 2^{7908908408020} is an apocalyptic number.

It is an amenable number.

7908908408020 is an abundant number, since it is smaller than the sum of its proper divisors (8720329205780).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7908908408020 is a wasteful number, since it uses less digits than its factorization.

7908908408020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 488808507 (or 488808505 counting only the distinct ones).

The product of its (nonzero) digits is 2322432, while the sum is 55.

The spelling of 7908908408020 in words is "seven trillion, nine hundred eight billion, nine hundred eight million, four hundred eight thousand, twenty".