251244464228 has 12 divisors (see below), whose sum is σ = 439927783680. Its totient is φ = 125550811752.

The previous prime is 251244464221. The next prime is 251244464311. The reversal of 251244464228 is 822464442152.

It is not an unprimeable number, because it can be changed into a prime (251244464221) 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, 17847176 + ... + 17861247.

It is an arithmetic number, because the mean of its divisors is an integer number (36660648640).

Almost surely, 2^251244464228 is an apocalyptic number.

It is an amenable number.

251244464228 is a deficient number, since it is larger than the sum of its proper divisors (188683319452).

251244464228 is a wasteful number, since it uses less digits than its factorization.

251244464228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35710186 (or 35710184 counting only the distinct ones).

The product of its digits is 983040, while the sum is 44.

The spelling of 251244464228 in words is "two hundred fifty-one billion, two hundred forty-four million, four hundred sixty-four thousand, two hundred twenty-eight".