165796259487656 has 64 divisors (see below), whose sum is σ = 368327864580480. Its totient is φ = 68487267179520.

The previous prime is 165796259487631. The next prime is 165796259487713. The reversal of 165796259487656 is 656784952697561.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 434814941 + ... + 435196076.

It is an arithmetic number, because the mean of its divisors is an integer number (5755122884070).

Almost surely, 2^{165796259487656} is an apocalyptic number.

It is an amenable number.

165796259487656 is an abundant number, since it is smaller than the sum of its proper divisors (202531605092824).

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

165796259487656 is a wasteful number, since it uses less digits than its factorization.

165796259487656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 870011154 (or 870011150 counting only the distinct ones).

The product of its digits is 41150592000, while the sum is 86.

The spelling of 165796259487656 in words is "one hundred sixty-five trillion, seven hundred ninety-six billion, two hundred fifty-nine million, four hundred eighty-seven thousand, six hundred fifty-six".