656984165028 has 24 divisors (see below), whose sum is σ = 1537380822432. Its totient is φ = 218363611584.

The previous prime is 656984165009. The next prime is 656984165053. The reversal of 656984165028 is 820561489656.

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, 78884425 + ... + 78892752.

It is an arithmetic number, because the mean of its divisors is an integer number (64057534268).

Almost surely, 2^656984165028 is an apocalyptic number.

It is an amenable number.

656984165028 is an abundant number, since it is smaller than the sum of its proper divisors (880396657404).

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

656984165028 is a wasteful number, since it uses less digits than its factorization.

656984165028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157777531 (or 157777529 counting only the distinct ones).

The product of its (nonzero) digits is 24883200, while the sum is 60.

The spelling of 656984165028 in words is "six hundred fifty-six billion, nine hundred eighty-four million, one hundred sixty-five thousand, twenty-eight".