165796979556 has 96 divisors (see below), whose sum is σ = 421281710080. Its totient is φ = 50446053504.

The previous prime is 165796979527. The next prime is 165796979603. The reversal of 165796979556 is 655979697561.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6068655 + ... + 6095913.

Almost surely, 2^165796979556 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 165796979556, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (210640855040).

165796979556 is an abundant number, since it is smaller than the sum of its proper divisors (255484730524).

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

165796979556 is a wasteful number, since it uses less digits than its factorization.

165796979556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27713 (or 27711 counting only the distinct ones).

The product of its digits is 964467000, while the sum is 75.

The spelling of 165796979556 in words is "one hundred sixty-five billion, seven hundred ninety-six million, nine hundred seventy-nine thousand, five hundred fifty-six".