68931904308 has 24 divisors (see below), whose sum is σ = 161413506240. Its totient is φ = 22895530560.

The previous prime is 68931904289. The next prime is 68931904343. The reversal of 68931904308 is 80340913986.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10217848 + ... + 10224591.

It is an arithmetic number, because the mean of its divisors is an integer number (6725562760).

Almost surely, 2^68931904308 is an apocalyptic number.

It is an amenable number.

68931904308 is an abundant number, since it is smaller than the sum of its proper divisors (92481601932).

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

68931904308 is a wasteful number, since it uses less digits than its factorization.

68931904308 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20442727 (or 20442725 counting only the distinct ones).

The product of its (nonzero) digits is 1119744, while the sum is 51.

The spelling of 68931904308 in words is "sixty-eight billion, nine hundred thirty-one million, nine hundred four thousand, three hundred eight".