256502112313365 has 144 divisors (see below), whose sum is σ = 492542853304320. Its totient is φ = 123048778828800.

The previous prime is 256502112313361. The next prime is 256502112313379. The reversal of 256502112313365 is 563313211205652.

256502112313365 is a `hidden beast` number, since 2 + 5 + 6 + 50 + 2 + 1 + 1 + 231 + 3 + 365 = 666.

It is not a de Polignac number, because 256502112313365 - 2² = 256502112313361 is a prime.

It is a super-2 number, since 2×256502112313365² (a number of 30 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 256502112313365.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256502112313361) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 465517096 + ... + 466067774.

It is an arithmetic number, because the mean of its divisors is an integer number (3420436481280).

Almost surely, 2^{256502112313365} is an apocalyptic number.

It is an amenable number.

256502112313365 is a deficient number, since it is larger than the sum of its proper divisors (236040740990955).

256502112313365 is a wasteful number, since it uses less digits than its factorization.

256502112313365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 551904 (or 551878 counting only the distinct ones).

The product of its (nonzero) digits is 972000, while the sum is 45.

The spelling of 256502112313365 in words is "two hundred fifty-six trillion, five hundred two billion, one hundred twelve million, three hundred thirteen thousand, three hundred sixty-five".