255651433431 has 8 divisors (see below), whose sum is σ = 344054265984. Its totient is φ = 168841444920.

The previous prime is 255651433397. The next prime is 255651433441. The reversal of 255651433431 is 134334156552.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-255651433431 is a prime.

It is a super-2 number, since 2×255651433431² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255651433441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 398210635 + ... + 398211276.

It is an arithmetic number, because the mean of its divisors is an integer number (43006783248).

Almost surely, 2^255651433431 is an apocalyptic number.

255651433431 is a deficient number, since it is larger than the sum of its proper divisors (88402832553).

255651433431 is a wasteful number, since it uses less digits than its factorization.

255651433431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 796422021.

The product of its digits is 648000, while the sum is 42.

Adding to 255651433431 its reverse (134334156552), we get a palindrome (389985589983).

The spelling of 255651433431 in words is "two hundred fifty-five billion, six hundred fifty-one million, four hundred thirty-three thousand, four hundred thirty-one".