165165616604 has 12 divisors (see below), whose sum is σ = 292522237224. Its totient is φ = 81587834544.

The previous prime is 165165616541. The next prime is 165165616643. The reversal of 165165616604 is 406616561561.

It is a congruent number.

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, 248743067 + ... + 248743730.

It is an arithmetic number, because the mean of its divisors is an integer number (24376853102).

Almost surely, 2^165165616604 is an apocalyptic number.

It is an amenable number.

165165616604 is a deficient number, since it is larger than the sum of its proper divisors (127356620620).

165165616604 is a wasteful number, since it uses less digits than its factorization.

165165616604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 497486884 (or 497486882 counting only the distinct ones).

The product of its (nonzero) digits is 777600, while the sum is 47.

The spelling of 165165616604 in words is "one hundred sixty-five billion, one hundred sixty-five million, six hundred sixteen thousand, six hundred four".