165975996016 has 40 divisors (see below), whose sum is σ = 324481981824. Its totient is φ = 82240466880.

The previous prime is 165975996007. The next prime is 165975996029. The reversal of 165975996016 is 610699579561.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1469331 + ... + 1578253.

Almost surely, 2^165975996016 is an apocalyptic number.

165975996016 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

165975996016 is a deficient number, since it is larger than the sum of its proper divisors (158505985808).

165975996016 is a wasteful number, since it uses less digits than its factorization.

165975996016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109789 (or 109783 counting only the distinct ones).

The product of its (nonzero) digits is 27556200, while the sum is 64.

The spelling of 165975996016 in words is "one hundred sixty-five billion, nine hundred seventy-five million, nine hundred ninety-six thousand, sixteen".