664353046563165 has 12 divisors (see below), whose sum is σ = 1151545280709564. Its totient is φ = 354321624833664.

The previous prime is 664353046563119. The next prime is 664353046563181. The reversal of 664353046563165 is 561365640353466.

664353046563165 is a `hidden beast` number, since 6 + 6 + 4 + 3 + 5 + 3 + 0 + 4 + 6 + 563 + 1 + 65 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 174110611229604 + 490242435333561 = 13195098^2 + 22141419^2 .

It is not a de Polignac number, because 664353046563165 - 2²² = 664353042368861 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7381700517324 + ... + 7381700517413.

It is an arithmetic number, because the mean of its divisors is an integer number (95962106725797).

Almost surely, 2^{664353046563165} is an apocalyptic number.

It is an amenable number.

664353046563165 is a deficient number, since it is larger than the sum of its proper divisors (487192234146399).

664353046563165 is a wasteful number, since it uses less digits than its factorization.

664353046563165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14763401034748 (or 14763401034745 counting only the distinct ones).

The product of its (nonzero) digits is 419904000, while the sum is 63.

The spelling of 664353046563165 in words is "six hundred sixty-four trillion, three hundred fifty-three billion, forty-six million, five hundred sixty-three thousand, one hundred sixty-five".