688930508395356 has 12 divisors (see below), whose sum is σ = 1607504519589192. Its totient is φ = 229643502798448.

The previous prime is 688930508395303. The next prime is 688930508395361. The reversal of 688930508395356 is 653593805039886.

It is a tau number, because it is divible by the number of its divisors (12).

It is a Smith number, since the sum of its digits (78) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28705437849795 + ... + 28705437849818.

It is an arithmetic number, because the mean of its divisors is an integer number (133958709965766).

Almost surely, 2^{688930508395356} is an apocalyptic number.

It is an amenable number.

688930508395356 is an abundant number, since it is smaller than the sum of its proper divisors (918574011193836).

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

688930508395356 is a wasteful number, since it uses less digits than its factorization.

688930508395356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57410875699620 (or 57410875699618 counting only the distinct ones).

The product of its (nonzero) digits is 5038848000, while the sum is 78.

The spelling of 688930508395356 in words is "six hundred eighty-eight trillion, nine hundred thirty billion, five hundred eight million, three hundred ninety-five thousand, three hundred fifty-six".