255253783863 has 32 divisors (see below), whose sum is σ = 386056652800. Its totient is φ = 148716279936.

The previous prime is 255253783847. The next prime is 255253783957. The reversal of 255253783863 is 368387352552.

It is not a de Polignac number, because 255253783863 - 2⁴ = 255253783847 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255253783843) 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, 1051233 + ... + 1271061.

It is an arithmetic number, because the mean of its divisors is an integer number (12064270400).

Almost surely, 2^255253783863 is an apocalyptic number.

255253783863 is a deficient number, since it is larger than the sum of its proper divisors (130802868937).

255253783863 is a wasteful number, since it uses less digits than its factorization.

255253783863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221431.

The product of its digits is 36288000, while the sum is 57.

The spelling of 255253783863 in words is "two hundred fifty-five billion, two hundred fifty-three million, seven hundred eighty-three thousand, eight hundred sixty-three".