165572789916 has 48 divisors (see below), whose sum is σ = 417661112960. Its totient is φ = 50873002560.

The previous prime is 165572789869. The next prime is 165572789923. The reversal of 165572789916 is 619987275561.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9805030 + ... + 9821901.

Almost surely, 2^165572789916 is an apocalyptic number.

It is an amenable number.

165572789916 is an abundant number, since it is smaller than the sum of its proper divisors (252088323044).

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

165572789916 is a wasteful number, since it uses less digits than its factorization.

165572789916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19626994 (or 19626992 counting only the distinct ones).

The product of its digits is 57153600, while the sum is 66.

The spelling of 165572789916 in words is "one hundred sixty-five billion, five hundred seventy-two million, seven hundred eighty-nine thousand, nine hundred sixteen".