251080668028 has 24 divisors (see below), whose sum is σ = 454435761024. Its totient is φ = 121257427200.

The previous prime is 251080668011. The next prime is 251080668043. The reversal of 251080668028 is 820866080152.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1878625 + ... + 2007832.

It is an arithmetic number, because the mean of its divisors is an integer number (18934823376).

Almost surely, 2^251080668028 is an apocalyptic number.

It is an amenable number.

251080668028 is a deficient number, since it is larger than the sum of its proper divisors (203355092996).

251080668028 is a wasteful number, since it uses less digits than its factorization.

251080668028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3887013 (or 3887011 counting only the distinct ones).

The product of its (nonzero) digits is 368640, while the sum is 46.

The spelling of 251080668028 in words is "two hundred fifty-one billion, eighty million, six hundred sixty-eight thousand, twenty-eight".