56554811611 has 16 divisors (see below), whose sum is σ = 58980873600. Its totient is φ = 54183382848.

The previous prime is 56554811603. The next prime is 56554811639. The reversal of 56554811611 is 11611845565.

It is a cyclic number.

It is not a de Polignac number, because 56554811611 - 2³ = 56554811603 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56554811641) 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, 1135020 + ... + 1183798.

It is an arithmetic number, because the mean of its divisors is an integer number (3686304600).

Almost surely, 2^56554811611 is an apocalyptic number.

56554811611 is a deficient number, since it is larger than the sum of its proper divisors (2426061989).

56554811611 is a wasteful number, since it uses less digits than its factorization.

56554811611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49338.

The product of its digits is 144000, while the sum is 43.

The spelling of 56554811611 in words is "fifty-six billion, five hundred fifty-four million, eight hundred eleven thousand, six hundred eleven".