165450730800 has 120 divisors (see below), whose sum is σ = 557888330560. Its totient is φ = 41798073600.

The previous prime is 165450730763. The next prime is 165450730811. The reversal of 165450730800 is 8037054561.

It is a tau number, because it is divible by the number of its divisors (120).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3605506 + ... + 3651105.

Almost surely, 2^165450730800 is an apocalyptic number.

165450730800 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

165450730800 is an abundant number, since it is smaller than the sum of its proper divisors (392437599760).

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

165450730800 is a wasteful number, since it uses less digits than its factorization.

165450730800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7256651 (or 7256640 counting only the distinct ones).

The product of its (nonzero) digits is 100800, while the sum is 39.

The spelling of 165450730800 in words is "one hundred sixty-five billion, four hundred fifty million, seven hundred thirty thousand, eight hundred".