551256631904 has 96 divisors (see below), whose sum is σ = 1278026346240. Its totient is φ = 231411980800.

The previous prime is 551256631889. The next prime is 551256631957. The reversal of 551256631904 is 409136652155.

It is a congruent number.

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, 939182 + ... + 1408749.

It is an arithmetic number, because the mean of its divisors is an integer number (13312774440).

Almost surely, 2^551256631904 is an apocalyptic number.

It is an amenable number.

551256631904 is an abundant number, since it is smaller than the sum of its proper divisors (726769714336).

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

551256631904 is a wasteful number, since it uses less digits than its factorization.

551256631904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2348004 (or 2347996 counting only the distinct ones).

The product of its (nonzero) digits is 972000, while the sum is 47.

The spelling of 551256631904 in words is "five hundred fifty-one billion, two hundred fifty-six million, six hundred thirty-one thousand, nine hundred four".