255645652615431 has 32 divisors (see below), whose sum is σ = 367756287091200. Its totient is φ = 157030990986624.

The previous prime is 255645652615417. The next prime is 255645652615511. The reversal of 255645652615431 is 134516256546552.

It is not a de Polignac number, because 255645652615431 - 2⁵ = 255645652615399 is a prime.

It is a super-2 number, since 2×255645652615431² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255645652615831) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 512478670 + ... + 512977268.

It is an arithmetic number, because the mean of its divisors is an integer number (11492383971600).

Almost surely, 2^{255645652615431} is an apocalyptic number.

255645652615431 is a deficient number, since it is larger than the sum of its proper divisors (112110634475769).

255645652615431 is a wasteful number, since it uses less digits than its factorization.

255645652615431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 522775.

The product of its digits is 129600000, while the sum is 60.

The spelling of 255645652615431 in words is "two hundred fifty-five trillion, six hundred forty-five billion, six hundred fifty-two million, six hundred fifteen thousand, four hundred thirty-one".