165668525355 has 16 divisors (see below), whose sum is σ = 267643134720. Its totient is φ = 87498715488.

The previous prime is 165668525293. The next prime is 165668525357. The reversal of 165668525355 is 553525866561.

It is not a de Polignac number, because 165668525355 - 2¹⁰ = 165668524331 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 165668525295 and 165668525304.

It is not an unprimeable number, because it can be changed into a prime (165668525357) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53612865 + ... + 53615954.

It is an arithmetic number, because the mean of its divisors is an integer number (16727695920).

Almost surely, 2^165668525355 is an apocalyptic number.

165668525355 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

165668525355 is a deficient number, since it is larger than the sum of its proper divisors (101974609365).

165668525355 is a wasteful number, since it uses less digits than its factorization.

165668525355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107228930.

The product of its digits is 32400000, while the sum is 57.

The spelling of 165668525355 in words is "one hundred sixty-five billion, six hundred sixty-eight million, five hundred twenty-five thousand, three hundred fifty-five".