56433644165 has 4 divisors (see below), whose sum is σ = 67720373004. Its totient is φ = 45146915328.

The previous prime is 56433644161. The next prime is 56433644213. The reversal of 56433644165 is 56144633465.

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

It can be written as a sum of positive squares in 2 ways, for example, as 8431463329 + 48002180836 = 91823^2 + 219094^2 .

It is a cyclic number.

It is not a de Polignac number, because 56433644165 - 2² = 56433644161 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 (56433644161) 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, 5643364412 + ... + 5643364421.

It is an arithmetic number, because the mean of its divisors is an integer number (16930093251).

Almost surely, 2^56433644165 is an apocalyptic number.

It is an amenable number.

56433644165 is a deficient number, since it is larger than the sum of its proper divisors (11286728839).

56433644165 is a wasteful number, since it uses less digits than its factorization.

56433644165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11286728838.

The product of its digits is 3110400, while the sum is 47.

The spelling of 56433644165 in words is "fifty-six billion, four hundred thirty-three million, six hundred forty-four thousand, one hundred sixty-five".