251036342164 has 12 divisors (see below), whose sum is σ = 439649731584. Its totient is φ = 125422133144.

The previous prime is 251036342149. The next prime is 251036342269. The reversal of 251036342164 is 461243630152.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24003604 + ... + 24014059.

It is an arithmetic number, because the mean of its divisors is an integer number (36637477632).

Almost surely, 2^251036342164 is an apocalyptic number.

It is an amenable number.

251036342164 is a deficient number, since it is larger than the sum of its proper divisors (188613389420).

251036342164 is a wasteful number, since it uses less digits than its factorization.

251036342164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48018974 (or 48018972 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 37.

The spelling of 251036342164 in words is "two hundred fifty-one billion, thirty-six million, three hundred forty-two thousand, one hundred sixty-four".