251046085660 has 48 divisors (see below), whose sum is σ = 543997490400. Its totient is φ = 97254056960.

The previous prime is 251046085657. The next prime is 251046085757. The reversal of 251046085660 is 66580640152.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1005010 + ... + 1229689.

It is an arithmetic number, because the mean of its divisors is an integer number (11333281050).

Almost surely, 2^251046085660 is an apocalyptic number.

251046085660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

251046085660 is an abundant number, since it is smaller than the sum of its proper divisors (292951404740).

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

251046085660 is a wasteful number, since it uses less digits than its factorization.

251046085660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2234886 (or 2234884 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 43.

The spelling of 251046085660 in words is "two hundred fifty-one billion, forty-six million, eighty-five thousand, six hundred sixty".