251681612048 has 40 divisors (see below), whose sum is σ = 490367691840. Its totient is φ = 125137077120.

The previous prime is 251681612003. The next prime is 251681612107. The reversal of 251681612048 is 840216186152.

251681612048 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1999061 + ... + 2121227.

It is an arithmetic number, because the mean of its divisors is an integer number (12259192296).

Almost surely, 2^251681612048 is an apocalyptic number.

It is an amenable number.

251681612048 is a deficient number, since it is larger than the sum of its proper divisors (238686079792).

251681612048 is a wasteful number, since it uses less digits than its factorization.

251681612048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122895 (or 122889 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 44.

The spelling of 251681612048 in words is "two hundred fifty-one billion, six hundred eighty-one million, six hundred twelve thousand, forty-eight".