255849137928 has 24 divisors (see below), whose sum is σ = 692924748750. Its totient is φ = 85283045952.

The previous prime is 255849137927. The next prime is 255849137941. The reversal of 255849137928 is 829731948552.

255849137928 is a `hidden beast` number, since 2 + 5 + 58 + 491 + 3 + 7 + 92 + 8 = 666.

It can be written as a sum of positive squares in only one way, i.e., 168610426884 + 87238711044 = 410622^2 + 295362^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is not an unprimeable number, because it can be changed into a prime (255849137927) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1776730053 + ... + 1776730196.

Almost surely, 2^255849137928 is an apocalyptic number.

It is an amenable number.

255849137928 is an abundant number, since it is smaller than the sum of its proper divisors (437075610822).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

255849137928 is a wasteful number, since it uses less digits than its factorization.

255849137928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3553460261 (or 3553460254 counting only the distinct ones).

The product of its digits is 43545600, while the sum is 63.

The spelling of 255849137928 in words is "two hundred fifty-five billion, eight hundred forty-nine million, one hundred thirty-seven thousand, nine hundred twenty-eight".