256622340360531 has 16 divisors (see below), whose sum is σ = 351420960204288. Its totient is φ = 166452908479200.

The previous prime is 256622340360481. The next prime is 256622340360577. The reversal of 256622340360531 is 135063043226652.

It is not a de Polignac number, because 256622340360531 - 2³³ = 256613750425939 is a prime.

It is a super-2 number, since 2×256622340360531² (a number of 30 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (256622340860531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29664585 + ... + 37326026.

It is an arithmetic number, because the mean of its divisors is an integer number (21963810012768).

Almost surely, 2^{256622340360531} is an apocalyptic number.

256622340360531 is a deficient number, since it is larger than the sum of its proper divisors (94798619843757).

256622340360531 is a wasteful number, since it uses less digits than its factorization.

256622340360531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67025162.

The product of its (nonzero) digits is 4665600, while the sum is 48.

The spelling of 256622340360531 in words is "two hundred fifty-six trillion, six hundred twenty-two billion, three hundred forty million, three hundred sixty thousand, five hundred thirty-one".