165672810688 has 56 divisors (see below), whose sum is σ = 409878849024. Its totient is φ = 64547846400.

The previous prime is 165672810659. The next prime is 165672810739. The reversal of 165672810688 is 886018276561.

It is a tau number, because it is divible by the number of its divisors (56).

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, 16804408 + ... + 16814263.

Almost surely, 2^165672810688 is an apocalyptic number.

It is an amenable number.

165672810688 is an abundant number, since it is smaller than the sum of its proper divisors (244206038336).

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

165672810688 is a wasteful number, since it uses less digits than its factorization.

165672810688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33618701 (or 33618691 counting only the distinct ones).

The product of its (nonzero) digits is 7741440, while the sum is 58.

The spelling of 165672810688 in words is "one hundred sixty-five billion, six hundred seventy-two million, eight hundred ten thousand, six hundred eighty-eight".