56816304657 has 16 divisors (see below), whose sum is σ = 86958630912. Its totient is φ = 32323433040.

The previous prime is 56816304647. The next prime is 56816304667. The reversal of 56816304657 is 75640361865.

It is an interprime number because it is at equal distance from previous prime (56816304647) and next prime (56816304667).

It is not a de Polignac number, because 56816304657 - 2⁴ = 56816304641 is a prime.

It is not an unprimeable number, because it can be changed into a prime (56816304647) 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, 5954569 + ... + 5964102.

It is an arithmetic number, because the mean of its divisors is an integer number (5434914432).

Almost surely, 2^56816304657 is an apocalyptic number.

It is an amenable number.

56816304657 is a deficient number, since it is larger than the sum of its proper divisors (30142326255).

56816304657 is a wasteful number, since it uses less digits than its factorization.

56816304657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11918908.

The product of its (nonzero) digits is 3628800, while the sum is 51.

The spelling of 56816304657 in words is "fifty-six billion, eight hundred sixteen million, three hundred four thousand, six hundred fifty-seven".