91575150165 has 48 divisors (see below), whose sum is σ = 162748872000. Its totient is φ = 47608162560.

The previous prime is 91575150097. The next prime is 91575150181. The reversal of 91575150165 is 56105157519.

91575150165 is a `hidden beast` number, since 9 + 1 + 575 + 15 + 0 + 1 + 65 = 666.

It is not a de Polignac number, because 91575150165 - 2⁸ = 91575149909 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 91575150165.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 918145 + ... + 1012985.

It is an arithmetic number, because the mean of its divisors is an integer number (3390601500).

Almost surely, 2^91575150165 is an apocalyptic number.

It is an amenable number.

91575150165 is a deficient number, since it is larger than the sum of its proper divisors (71173721835).

91575150165 is a wasteful number, since it uses less digits than its factorization.

91575150165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95394 (or 95391 counting only the distinct ones).

The product of its (nonzero) digits is 236250, while the sum is 45.

The spelling of 91575150165 in words is "ninety-one billion, five hundred seventy-five million, one hundred fifty thousand, one hundred sixty-five".