251479342080 has 132 divisors (see below), whose sum is σ = 871369531032. Its totient is φ = 67061145600.

The previous prime is 251479342067. The next prime is 251479342087. The reversal of 251479342080 is 80243974152.

251479342080 is a `hidden beast` number, since 2 + 5 + 147 + 9 + 3 + 420 + 80 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (251479342087) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2682646 + ... + 2774805.

It is an arithmetic number, because the mean of its divisors is an integer number (6601284326).

Almost surely, 2^251479342080 is an apocalyptic number.

251479342080 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

251479342080 is an abundant number, since it is smaller than the sum of its proper divisors (619890188952).

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

251479342080 is a wasteful number, since it uses less digits than its factorization.

251479342080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5457482 (or 5457461 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 45.

The spelling of 251479342080 in words is "two hundred fifty-one billion, four hundred seventy-nine million, three hundred forty-two thousand, eighty".