56855860490 has 96 divisors (see below), whose sum is σ = 127256443200. Its totient is φ = 18079925760.

The previous prime is 56855860441. The next prime is 56855860519. The reversal of 56855860490 is 9406855865.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 272726 + ... + 433694.

It is an arithmetic number, because the mean of its divisors is an integer number (1325587950).

Almost surely, 2^56855860490 is an apocalyptic number.

56855860490 is an abundant number, since it is smaller than the sum of its proper divisors (70400582710).

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

56855860490 is a wasteful number, since it uses less digits than its factorization.

56855860490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161032 (or 161019 counting only the distinct ones).

The product of its (nonzero) digits is 10368000, while the sum is 56.

The spelling of 56855860490 in words is "fifty-six billion, eight hundred fifty-five million, eight hundred sixty thousand, four hundred ninety".