255637896832 has 64 divisors (see below), whose sum is σ = 519160505760. Its totient is φ = 125341332480.

The previous prime is 255637896827. The next prime is 255637896859. The reversal of 255637896832 is 238698736552.

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (64).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14447863 + ... + 14465545.

Almost surely, 2^255637896832 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 255637896832, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (259580252880).

255637896832 is an abundant number, since it is smaller than the sum of its proper divisors (263522608928).

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

255637896832 is a wasteful number, since it uses less digits than its factorization.

255637896832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19881 (or 19869 counting only the distinct ones).

The product of its digits is 130636800, while the sum is 64.

The spelling of 255637896832 in words is "two hundred fifty-five billion, six hundred thirty-seven million, eight hundred ninety-six thousand, eight hundred thirty-two".