56518169458911 has 4 divisors (see below), whose sum is σ = 75357559278552. Its totient is φ = 37678779639272.

The previous prime is 56518169458879. The next prime is 56518169458963. The reversal of 56518169458911 is 11985496181565.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 56518169458911 - 2⁵ = 56518169458879 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56518169458991) 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, 9419694909816 + ... + 9419694909821.

It is an arithmetic number, because the mean of its divisors is an integer number (18839389819638).

Almost surely, 2^{56518169458911} is an apocalyptic number.

56518169458911 is a deficient number, since it is larger than the sum of its proper divisors (18839389819641).

56518169458911 is a wasteful number, since it uses less digits than its factorization.

56518169458911 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18839389819640.

The product of its digits is 93312000, while the sum is 69.

The spelling of 56518169458911 in words is "fifty-six trillion, five hundred eighteen billion, one hundred sixty-nine million, four hundred fifty-eight thousand, nine hundred eleven".