251513214412 has 6 divisors (see below), whose sum is σ = 440148125228. Its totient is φ = 125756607204.

The previous prime is 251513214401. The next prime is 251513214451. The reversal of 251513214412 is 214412315152.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31439151798 + ... + 31439151805.

Almost surely, 2^251513214412 is an apocalyptic number.

It is an amenable number.

251513214412 is a deficient number, since it is larger than the sum of its proper divisors (188634910816).

251513214412 is a wasteful number, since it uses less digits than its factorization.

251513214412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62878303607 (or 62878303605 counting only the distinct ones).

The product of its digits is 9600, while the sum is 31.

Adding to 251513214412 its reverse (214412315152), we get a palindrome (465925529564).

The spelling of 251513214412 in words is "two hundred fifty-one billion, five hundred thirteen million, two hundred fourteen thousand, four hundred twelve".