165537627372 has 108 divisors (see below), whose sum is σ = 469888375320. Its totient is φ = 50934604032.

The previous prime is 165537627371. The next prime is 165537627379. The reversal of 165537627372 is 273726735561.

165537627372 is a `hidden beast` number, since 1 + 6 + 5 + 5 + 3 + 7 + 627 + 3 + 7 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (108).

It is a super-2 number, since 2×165537627372² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (165537627371) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 339597 + ... + 668132.

It is an arithmetic number, because the mean of its divisors is an integer number (4350818290).

Almost surely, 2^165537627372 is an apocalyptic number.

165537627372 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

165537627372 is an abundant number, since it is smaller than the sum of its proper divisors (304350747948).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

165537627372 is a wasteful number, since it uses less digits than its factorization.

165537627372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1007774 (or 1007747 counting only the distinct ones).

The product of its digits is 11113200, while the sum is 54.

The spelling of 165537627372 in words is "one hundred sixty-five billion, five hundred thirty-seven million, six hundred twenty-seven thousand, three hundred seventy-two".