251613122150 has 48 divisors (see below), whose sum is σ = 504057831984. Its totient is φ = 92892727680.

The previous prime is 251613122143. The next prime is 251613122171. The reversal of 251613122150 is 51221316152.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7853564 + ... + 7885536.

It is an arithmetic number, because the mean of its divisors is an integer number (10501204833).

Almost surely, 2^251613122150 is an apocalyptic number.

251613122150 is an abundant number, since it is smaller than the sum of its proper divisors (252444709834).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

251613122150 is a wasteful number, since it uses less digits than its factorization.

251613122150 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44105 (or 44100 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 29.

The spelling of 251613122150 in words is "two hundred fifty-one billion, six hundred thirteen million, one hundred twenty-two thousand, one hundred fifty".