56556570028 has 24 divisors (see below), whose sum is σ = 113395240224. Its totient is φ = 24178080000.

The previous prime is 56556570013. The next prime is 56556570029. The reversal of 56556570028 is 82007565565.

It is a super-2 number, since 2×56556570028² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (56556570029) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2507323 + ... + 2529778.

It is an arithmetic number, because the mean of its divisors is an integer number (4724801676).

Almost surely, 2^56556570028 is an apocalyptic number.

It is an amenable number.

56556570028 is an abundant number, since it is smaller than the sum of its proper divisors (56838670196).

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

56556570028 is a wasteful number, since it uses less digits than its factorization.

56556570028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5037513 (or 5037511 counting only the distinct ones).

The product of its (nonzero) digits is 2520000, while the sum is 49.

The spelling of 56556570028 in words is "fifty-six billion, five hundred fifty-six million, five hundred seventy thousand, twenty-eight".