165930939540804 has 12 divisors (see below), whose sum is σ = 387172192261904. Its totient is φ = 55310313180264.

The previous prime is 165930939540797. The next prime is 165930939540823. The reversal of 165930939540804 is 408045939039561.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6913789147522 + ... + 6913789147545.

Almost surely, 2^{165930939540804} is an apocalyptic number.

It is an amenable number.

165930939540804 is an abundant number, since it is smaller than the sum of its proper divisors (221241252721100).

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

165930939540804 is a wasteful number, since it uses less digits than its factorization.

165930939540804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13827578295074 (or 13827578295072 counting only the distinct ones).

The product of its (nonzero) digits is 125971200, while the sum is 66.

The spelling of 165930939540804 in words is "one hundred sixty-five trillion, nine hundred thirty billion, nine hundred thirty-nine million, five hundred forty thousand, eight hundred four".