251400012628 has 12 divisors (see below), whose sum is σ = 463105286560. Its totient is φ = 119084216472.

The previous prime is 251400012623. The next prime is 251400012631. The reversal of 251400012628 is 826210004152.

It is a self number, because there is not a number n which added to its sum of digits gives 251400012628.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (251400012623) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1653947376 + ... + 1653947527.

Almost surely, 2^251400012628 is an apocalyptic number.

It is an amenable number.

251400012628 is a deficient number, since it is larger than the sum of its proper divisors (211705273932).

251400012628 is a wasteful number, since it uses less digits than its factorization.

251400012628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3307894926 (or 3307894924 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 31.

The spelling of 251400012628 in words is "two hundred fifty-one billion, four hundred million, twelve thousand, six hundred twenty-eight".