165111718764 has 12 divisors (see below), whose sum is σ = 385260677144. Its totient is φ = 55037239584.

The previous prime is 165111718729. The next prime is 165111718781. The reversal of 165111718764 is 467817111561.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6879654937 + ... + 6879654960.

Almost surely, 2^165111718764 is an apocalyptic number.

It is an amenable number.

165111718764 is an abundant number, since it is smaller than the sum of its proper divisors (220148958380).

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

165111718764 is a wasteful number, since it uses less digits than its factorization.

165111718764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13759309904 (or 13759309902 counting only the distinct ones).

The product of its digits is 282240, while the sum is 48.

The spelling of 165111718764 in words is "one hundred sixty-five billion, one hundred eleven million, seven hundred eighteen thousand, seven hundred sixty-four".