165012107251564 has 24 divisors (see below), whose sum is σ = 288824293332288. Its totient is φ = 82490881710720.

The previous prime is 165012107251559. The next prime is 165012107251571. The reversal of 165012107251564 is 465152701210561.

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, 654899734 + ... + 655151650.

It is an arithmetic number, because the mean of its divisors is an integer number (12034345555512).

Almost surely, 2^{165012107251564} is an apocalyptic number.

It is an amenable number.

165012107251564 is a deficient number, since it is larger than the sum of its proper divisors (123812186080724).

165012107251564 is a wasteful number, since it uses less digits than its factorization.

165012107251564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 281385 (or 281383 counting only the distinct ones).

The product of its (nonzero) digits is 504000, while the sum is 46.

The spelling of 165012107251564 in words is "one hundred sixty-five trillion, twelve billion, one hundred seven million, two hundred fifty-one thousand, five hundred sixty-four".