402113125656 has 80 divisors (see below), whose sum is σ = 1228679016840. Its totient is φ = 121852460160.

The previous prime is 402113125649. The next prime is 402113125723. The reversal of 402113125656 is 656521311204.

402113125656 is a `hidden beast` number, since 40 + 21 + 1 + 31 + 2 + 565 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 402113125656.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 28199461 + ... + 28213716.

Almost surely, 2^402113125656 is an apocalyptic number.

It is an amenable number.

402113125656 is an abundant number, since it is smaller than the sum of its proper divisors (826565891184).

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

402113125656 is a wasteful number, since it uses less digits than its factorization.

402113125656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56413206 (or 56413193 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

The spelling of 402113125656 in words is "four hundred two billion, one hundred thirteen million, one hundred twenty-five thousand, six hundred fifty-six".