56181018164 has 12 divisors (see below), whose sum is σ = 100408628544. Its totient is φ = 27492838584.

The previous prime is 56181018161. The next prime is 56181018199. The reversal of 56181018164 is 46181018165.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56181018161) 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, 149417414 + ... + 149417789.

It is an arithmetic number, because the mean of its divisors is an integer number (8367385712).

Almost surely, 2^56181018164 is an apocalyptic number.

It is an amenable number.

56181018164 is a deficient number, since it is larger than the sum of its proper divisors (44227610380).

56181018164 is a wasteful number, since it uses less digits than its factorization.

56181018164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 298835254 (or 298835252 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 41.

Subtracting from 56181018164 its reverse (46181018165), we obtain a palindrome (9999999999).

It can be divided in two parts, 5618101 and 8164, that added together give a palindrome (5626265).

The spelling of 56181018164 in words is "fifty-six billion, one hundred eighty-one million, eighteen thousand, one hundred sixty-four".