255891373698 has 32 divisors (see below), whose sum is σ = 515867382720. Its totient is φ = 84619028480.

The previous prime is 255891373679. The next prime is 255891373729. The reversal of 255891373698 is 896373198552.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48418 + ... + 717026.

It is an arithmetic number, because the mean of its divisors is an integer number (16120855710).

Almost surely, 2^255891373698 is an apocalyptic number.

255891373698 is an abundant number, since it is smaller than the sum of its proper divisors (259976009022).

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

255891373698 is a wasteful number, since it uses less digits than its factorization.

255891373698 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 669122.

The product of its digits is 97977600, while the sum is 66.

The spelling of 255891373698 in words is "two hundred fifty-five billion, eight hundred ninety-one million, three hundred seventy-three thousand, six hundred ninety-eight".