56520802565 has 16 divisors (see below), whose sum is σ = 68068166400. Its totient is φ = 45054616320.

The previous prime is 56520802553. The next prime is 56520802589.

56520802565 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 56520802565 - 2³⁴ = 39340933381 is a prime.

It is a super-2 number, since 2×56520802565² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5852861 + ... + 5862509.

It is an arithmetic number, because the mean of its divisors is an integer number (4254260400).

Almost surely, 2^56520802565 is an apocalyptic number.

It is an amenable number.

56520802565 is a deficient number, since it is larger than the sum of its proper divisors (11547363835).

56520802565 is a wasteful number, since it uses less digits than its factorization.

56520802565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13732.

The product of its (nonzero) digits is 720000, while the sum is 44.

The spelling of 56520802565 in words is "fifty-six billion, five hundred twenty million, eight hundred two thousand, five hundred sixty-five".