255541665231 has 12 divisors (see below), whose sum is σ = 369272772960. Its totient is φ = 170288632800.

The previous prime is 255541665221. The next prime is 255541665257. The reversal of 255541665231 is 132566145552.

255541665231 is a `hidden beast` number, since 2 + 5 + 554 + 1 + 6 + 65 + 2 + 31 = 666.

It is not a de Polignac number, because 255541665231 - 2¹¹ = 255541663183 is a prime.

It is a super-2 number, since 2×255541665231² (a number of 24 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255541665221) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6017446 + ... + 6059763.

It is an arithmetic number, because the mean of its divisors is an integer number (30772731080).

Almost surely, 2^255541665231 is an apocalyptic number.

255541665231 is a deficient number, since it is larger than the sum of its proper divisors (113731107729).

255541665231 is a wasteful number, since it uses less digits than its factorization.

255541665231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12079566 (or 12079563 counting only the distinct ones).

The product of its digits is 1080000, while the sum is 45.

The spelling of 255541665231 in words is "two hundred fifty-five billion, five hundred forty-one million, six hundred sixty-five thousand, two hundred thirty-one".