56662571523 has 32 divisors (see below), whose sum is σ = 76921401600. Its totient is φ = 37096012800.

The previous prime is 56662571513. The next prime is 56662571549. The reversal of 56662571523 is 32517526665.

It is not a de Polignac number, because 56662571523 - 2¹⁰ = 56662570499 is a prime.

It is not an unprimeable number, because it can be changed into a prime (56662571513) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 41632363 + ... + 41633723.

It is an arithmetic number, because the mean of its divisors is an integer number (2403793800).

Almost surely, 2^56662571523 is an apocalyptic number.

56662571523 is a deficient number, since it is larger than the sum of its proper divisors (20258830077).

56662571523 is a wasteful number, since it uses less digits than its factorization.

56662571523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2403.

The product of its digits is 2268000, while the sum is 48.

The spelling of 56662571523 in words is "fifty-six billion, six hundred sixty-two million, five hundred seventy-one thousand, five hundred twenty-three".