251883486140 has 48 divisors (see below), whose sum is σ = 621430034400. Its totient is φ = 84548302080.

The previous prime is 251883486109. The next prime is 251883486181. The reversal of 251883486140 is 41684388152.

251883486140 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44032715 + ... + 44038434.

It is an arithmetic number, because the mean of its divisors is an integer number (12946459050).

Almost surely, 2^251883486140 is an apocalyptic number.

251883486140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

251883486140 is an abundant number, since it is smaller than the sum of its proper divisors (369546548260).

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

251883486140 is a wasteful number, since it uses less digits than its factorization.

251883486140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88071182 (or 88071180 counting only the distinct ones).

The product of its (nonzero) digits is 1474560, while the sum is 50.

The spelling of 251883486140 in words is "two hundred fifty-one billion, eight hundred eighty-three million, four hundred eighty-six thousand, one hundred forty".