165406652900 has 36 divisors (see below), whose sum is σ = 363475902720. Its totient is φ = 65325156000.

The previous prime is 165406652897. The next prime is 165406652951. The reversal of 165406652900 is 9256604561.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10460876 + ... + 10476675.

Almost surely, 2^165406652900 is an apocalyptic number.

165406652900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

165406652900 is an abundant number, since it is smaller than the sum of its proper divisors (198069249820).

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

165406652900 is a wasteful number, since it uses less digits than its factorization.

165406652900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20937644 (or 20937637 counting only the distinct ones).

The product of its (nonzero) digits is 388800, while the sum is 44.

The spelling of 165406652900 in words is "one hundred sixty-five billion, four hundred six million, six hundred fifty-two thousand, nine hundred".