320636444164 has 24 divisors (see below), whose sum is σ = 571749948000. Its totient is φ = 157306818240.

The previous prime is 320636444153. The next prime is 320636444179. The reversal of 320636444164 is 461444636023.

It is a super-2 number, since 2×320636444164² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 320636444164.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3391014 + ... + 3484285.

It is an arithmetic number, because the mean of its divisors is an integer number (23822914500).

Almost surely, 2^320636444164 is an apocalyptic number.

It is an amenable number.

320636444164 is a deficient number, since it is larger than the sum of its proper divisors (251113503836).

320636444164 is a wasteful number, since it uses less digits than its factorization.

320636444164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6875523 (or 6875521 counting only the distinct ones).

The product of its (nonzero) digits is 995328, while the sum is 43.

The spelling of 320636444164 in words is "three hundred twenty billion, six hundred thirty-six million, four hundred forty-four thousand, one hundred sixty-four".