165544027164 has 18 divisors (see below), whose sum is σ = 418458513200. Its totient is φ = 55181342376.

The previous prime is 165544027151. The next prime is 165544027169. The reversal of 165544027164 is 461720445561.

165544027164 is a `hidden beast` number, since 16 + 554 + 4 + 0 + 27 + 1 + 64 = 666.

165544027164 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165544027169) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2299222564 + ... + 2299222635.

Almost surely, 2^165544027164 is an apocalyptic number.

It is an amenable number.

165544027164 is an abundant number, since it is smaller than the sum of its proper divisors (252914486036).

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

165544027164 is a wasteful number, since it uses less digits than its factorization.

165544027164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4598445209 (or 4598445204 counting only the distinct ones).

The product of its (nonzero) digits is 806400, while the sum is 45.

The spelling of 165544027164 in words is "one hundred sixty-five billion, five hundred forty-four million, twenty-seven thousand, one hundred sixty-four".