165049897455580 has 48 divisors (see below), whose sum is σ = 356046665587200. Its totient is φ = 64222249171968.

The previous prime is 165049897455563. The next prime is 165049897455623. The reversal of 165049897455580 is 85554798940561.

It is a super-3 number, since 3×165049897455580³ (a number of 44 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 165049897455497 and 165049897455506.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19686957 + ... + 26789476.

It is an arithmetic number, because the mean of its divisors is an integer number (7417638866400).

Almost surely, 2^{165049897455580} is an apocalyptic number.

165049897455580 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

165049897455580 is an abundant number, since it is smaller than the sum of its proper divisors (190996768131620).

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

165049897455580 is a wasteful number, since it uses less digits than its factorization.

165049897455580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46481278 (or 46481276 counting only the distinct ones).

The product of its (nonzero) digits is 2177280000, while the sum is 76.

The spelling of 165049897455580 in words is "one hundred sixty-five trillion, forty-nine billion, eight hundred ninety-seven million, four hundred fifty-five thousand, five hundred eighty".