165018508375 has 32 divisors (see below), whose sum is σ = 235398773376. Its totient is φ = 113138611200.

The previous prime is 165018508363. The next prime is 165018508409. The reversal of 165018508375 is 573805810561.

It is not a de Polignac number, because 165018508375 - 2³³ = 156428573783 is a prime.

It is a super-2 number, since 2×165018508375² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9487687 + ... + 9505063.

It is an arithmetic number, because the mean of its divisors is an integer number (7356211668).

Almost surely, 2^165018508375 is an apocalyptic number.

165018508375 is a deficient number, since it is larger than the sum of its proper divisors (70380265001).

165018508375 is a wasteful number, since it uses less digits than its factorization.

165018508375 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28252 (or 28242 counting only the distinct ones).

The product of its (nonzero) digits is 1008000, while the sum is 49.

The spelling of 165018508375 in words is "one hundred sixty-five billion, eighteen million, five hundred eight thousand, three hundred seventy-five".