255372880644 has 72 divisors (see below), whose sum is σ = 748755029568. Its totient is φ = 71874665280.

The previous prime is 255372880627. The next prime is 255372880657. The reversal of 255372880644 is 446088273552.

255372880644 is a `hidden beast` number, since 2 + 5 + 537 + 28 + 80 + 6 + 4 + 4 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7545687 + ... + 7579454.

Almost surely, 2^255372880644 is an apocalyptic number.

It is an amenable number.

255372880644 is an abundant number, since it is smaller than the sum of its proper divisors (493382148924).

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

255372880644 is a wasteful number, since it uses less digits than its factorization.

255372880644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15125225 (or 15125220 counting only the distinct ones).

The product of its (nonzero) digits is 12902400, while the sum is 54.

The spelling of 255372880644 in words is "two hundred fifty-five billion, three hundred seventy-two million, eight hundred eighty thousand, six hundred forty-four".