251085304068 has 48 divisors (see below), whose sum is σ = 588823435200. Its totient is φ = 83273616000.

The previous prime is 251085304061. The next prime is 251085304069. The reversal of 251085304068 is 860403580152.

251085304068 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (251085304061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1865643 + ... + 1995693.

It is an arithmetic number, because the mean of its divisors is an integer number (12267154900).

Almost surely, 2^251085304068 is an apocalyptic number.

It is an amenable number.

251085304068 is an abundant number, since it is smaller than the sum of its proper divisors (337738131132).

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

251085304068 is a wasteful number, since it uses less digits than its factorization.

251085304068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130868 (or 130866 counting only the distinct ones).

The product of its (nonzero) digits is 230400, while the sum is 42.

The spelling of 251085304068 in words is "two hundred fifty-one billion, eighty-five million, three hundred four thousand, sixty-eight".