165457202164 has 12 divisors (see below), whose sum is σ = 292112494884. Its totient is φ = 81996489344.

The previous prime is 165457202123. The next prime is 165457202167. The reversal of 165457202164 is 461202754561.

It can be written as a sum of positive squares in 2 ways, for example, as 2477052900 + 162980149264 = 49770^2 + 403708^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 165457202164.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165457202167) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 183027427 + ... + 183028330.

It is an arithmetic number, because the mean of its divisors is an integer number (24342707907).

Almost surely, 2^165457202164 is an apocalyptic number.

It is an amenable number.

165457202164 is a deficient number, since it is larger than the sum of its proper divisors (126655292720).

165457202164 is a wasteful number, since it uses less digits than its factorization.

165457202164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 366055874 (or 366055872 counting only the distinct ones).

The product of its (nonzero) digits is 403200, while the sum is 43.

The spelling of 165457202164 in words is "one hundred sixty-five billion, four hundred fifty-seven million, two hundred two thousand, one hundred sixty-four".