56571998256 has 30 divisors (see below), whose sum is σ = 158323023300. Its totient is φ = 18857332704.

The previous prime is 56571998237. The next prime is 56571998291. The reversal of 56571998256 is 65289917565.

56571998256 is a `hidden beast` number, since 5 + 6 + 571 + 9 + 9 + 8 + 2 + 56 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 56571998193 and 56571998202.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 196430406 + ... + 196430693.

It is an arithmetic number, because the mean of its divisors is an integer number (5277434110).

Almost surely, 2^56571998256 is an apocalyptic number.

It is an amenable number.

56571998256 is an abundant number, since it is smaller than the sum of its proper divisors (101751025044).

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

56571998256 is a wasteful number, since it uses less digits than its factorization.

56571998256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 392861113 (or 392861104 counting only the distinct ones).

The product of its digits is 40824000, while the sum is 63.

The spelling of 56571998256 in words is "fifty-six billion, five hundred seventy-one million, nine hundred ninety-eight thousand, two hundred fifty-six".