56637605413 has 4 divisors (see below), whose sum is σ = 56639920108. Its totient is φ = 56635290720.

The previous prime is 56637605347. The next prime is 56637605447. The reversal of 56637605413 is 31450673665.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 31450673665 = 5 ⋅6290134733.

It can be written as a sum of positive squares in 2 ways, for example, as 8677481409 + 47960124004 = 93153^2 + 218998^2 .

It is a cyclic number.

It is not a de Polignac number, because 56637605413 - 2²⁵ = 56604050981 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56637605473) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1120248 + ... + 1169713.

It is an arithmetic number, because the mean of its divisors is an integer number (14159980027).

Almost surely, 2^56637605413 is an apocalyptic number.

It is an amenable number.

56637605413 is a deficient number, since it is larger than the sum of its proper divisors (2314695).

56637605413 is a wasteful number, since it uses less digits than its factorization.

56637605413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2314694.

The product of its (nonzero) digits is 1360800, while the sum is 46.

The spelling of 56637605413 in words is "fifty-six billion, six hundred thirty-seven million, six hundred five thousand, four hundred thirteen".