56566657158 has 64 divisors (see below), whose sum is σ = 131253454080. Its totient is φ = 16071782400.

The previous prime is 56566657109. The next prime is 56566657163. The reversal of 56566657158 is 85175666565.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 110883 + ... + 354158.

It is an arithmetic number, because the mean of its divisors is an integer number (2050835220).

Almost surely, 2^56566657158 is an apocalyptic number.

56566657158 is an abundant number, since it is smaller than the sum of its proper divisors (74686796922).

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

56566657158 is a wasteful number, since it uses less digits than its factorization.

56566657158 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 465173.

The product of its digits is 45360000, while the sum is 60.

The spelling of 56566657158 in words is "fifty-six billion, five hundred sixty-six million, six hundred fifty-seven thousand, one hundred fifty-eight".