56408813057 has 16 divisors (see below), whose sum is σ = 57165901632. Its totient is φ = 55657728000.

The previous prime is 56408813053. The next prime is 56408813059. The reversal of 56408813057 is 75031880465.

It is a cyclic number.

It is not a de Polignac number, because 56408813057 - 2² = 56408813053 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56408813053) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19839878 + ... + 19842720.

It is an arithmetic number, because the mean of its divisors is an integer number (3572868852).

Almost surely, 2^56408813057 is an apocalyptic number.

It is an amenable number.

56408813057 is a deficient number, since it is larger than the sum of its proper divisors (757088575).

56408813057 is a wasteful number, since it uses less digits than its factorization.

56408813057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3808.

The product of its (nonzero) digits is 806400, while the sum is 47.

The spelling of 56408813057 in words is "fifty-six billion, four hundred eight million, eight hundred thirteen thousand, fifty-seven".