56156405868 has 24 divisors (see below), whose sum is σ = 145590682160. Its totient is φ = 18718801920.

The previous prime is 56156405819. The next prime is 56156405927. The reversal of 56156405868 is 86850465165.

56156405868 is a `hidden beast` number, since 5 + 6 + 1 + 56 + 4 + 0 + 586 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

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, 259983253 + ... + 259983468.

Almost surely, 2^56156405868 is an apocalyptic number.

It is an amenable number.

56156405868 is an abundant number, since it is smaller than the sum of its proper divisors (89434276292).

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

56156405868 is a wasteful number, since it uses less digits than its factorization.

56156405868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 519966734 (or 519966726 counting only the distinct ones).

The product of its (nonzero) digits is 6912000, while the sum is 54.

The spelling of 56156405868 in words is "fifty-six billion, one hundred fifty-six million, four hundred five thousand, eight hundred sixty-eight".