165104510165 has 32 divisors (see below), whose sum is σ = 227133538560. Its totient is φ = 112862836224.

The previous prime is 165104510117. The next prime is 165104510167. The reversal of 165104510165 is 561015401561.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-165104510165 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165104510167) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15936167 + ... + 15946523.

It is an arithmetic number, because the mean of its divisors is an integer number (7097923080).

Almost surely, 2^165104510165 is an apocalyptic number.

It is an amenable number.

165104510165 is a deficient number, since it is larger than the sum of its proper divisors (62029028395).

165104510165 is a wasteful number, since it uses less digits than its factorization.

165104510165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11741.

The product of its (nonzero) digits is 18000, while the sum is 35.

The spelling of 165104510165 in words is "one hundred sixty-five billion, one hundred four million, five hundred ten thousand, one hundred sixty-five".