165679280564 has 24 divisors (see below), whose sum is σ = 331376713920. Its totient is φ = 71001516096.

The previous prime is 165679280549. The next prime is 165679280573. The reversal of 165679280564 is 465082976561.

It is a Smith number, since the sum of its digits (59) coincides with the sum of the digits of its prime factors.

It is a congruent number.

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, 391307 + ... + 696045.

It is an arithmetic number, because the mean of its divisors is an integer number (13807363080).

Almost surely, 2^165679280564 is an apocalyptic number.

165679280564 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

165679280564 is an abundant number, since it is smaller than the sum of its proper divisors (165697433356).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

165679280564 is a wasteful number, since it uses less digits than its factorization.

165679280564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324167 (or 324165 counting only the distinct ones).

The product of its (nonzero) digits is 21772800, while the sum is 59.

The spelling of 165679280564 in words is "one hundred sixty-five billion, six hundred seventy-nine million, two hundred eighty thousand, five hundred sixty-four".