165037432065 has 32 divisors (see below), whose sum is σ = 303226675200. Its totient is φ = 75806665920.

The previous prime is 165037432037. The next prime is 165037432073. The reversal of 165037432065 is 560234730561.

It is not a de Polignac number, because 165037432065 - 2¹¹ = 165037430017 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 26318625 + ... + 26324894.

It is an arithmetic number, because the mean of its divisors is an integer number (9475833600).

Almost surely, 2^165037432065 is an apocalyptic number.

165037432065 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

165037432065 is a deficient number, since it is larger than the sum of its proper divisors (138189243135).

165037432065 is a wasteful number, since it uses less digits than its factorization.

165037432065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52643557.

The product of its (nonzero) digits is 453600, while the sum is 42.

The spelling of 165037432065 in words is "one hundred sixty-five billion, thirty-seven million, four hundred thirty-two thousand, sixty-five".