165907520748 has 72 divisors (see below), whose sum is σ = 442973346816. Its totient is φ = 52273922400.

The previous prime is 165907520747. The next prime is 165907520749. The reversal of 165907520748 is 847025709561.

165907520748 is a `hidden beast` number, since 1 + 6 + 590 + 7 + 5 + 2 + 0 + 7 + 48 = 666.

It is an interprime number because it is at equal distance from previous prime (165907520747) and next prime (165907520749).

It is a junction number, because it is equal to n+sod(n) for n = 165907520694 and 165907520703.

It is not an unprimeable number, because it can be changed into a prime (165907520747) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1680648 + ... + 1776623.

Almost surely, 2^165907520748 is an apocalyptic number.

165907520748 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

165907520748 is an abundant number, since it is smaller than the sum of its proper divisors (277065826068).

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

165907520748 is a wasteful number, since it uses less digits than its factorization.

165907520748 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3457355 (or 3457350 counting only the distinct ones).

The product of its (nonzero) digits is 4233600, while the sum is 54.

The spelling of 165907520748 in words is "one hundred sixty-five billion, nine hundred seven million, five hundred twenty thousand, seven hundred forty-eight".