56891422656 has 56 divisors (see below), whose sum is σ = 167250252240. Its totient is φ = 18963806976.

The previous prime is 56891422547. The next prime is 56891422727. The reversal of 56891422656 is 65622419865.

56891422656 is a `hidden beast` number, since 568 + 9 + 1 + 4 + 2 + 26 + 56 = 666.

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

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, 16459911 + ... + 16463366.

Almost surely, 2^56891422656 is an apocalyptic number.

It is an amenable number.

56891422656 is an abundant number, since it is smaller than the sum of its proper divisors (110358829584).

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

56891422656 is a wasteful number, since it uses less digits than its factorization.

56891422656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32923298 (or 32923282 counting only the distinct ones).

The product of its digits is 6220800, while the sum is 54.

The spelling of 56891422656 in words is "fifty-six billion, eight hundred ninety-one million, four hundred twenty-two thousand, six hundred fifty-six".