255891084385024 has 144 divisors (see below), whose sum is σ = 582326627984640. Its totient is φ = 111088147681280.

The previous prime is 255891084384967. The next prime is 255891084385033. The reversal of 255891084385024 is 420583480198552.

It is a Harshad number since it is a multiple of its sum of digits (64).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39684474 + ... + 45679750.

It is an arithmetic number, because the mean of its divisors is an integer number (4043934916560).

Almost surely, 2^{255891084385024} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 255891084385024, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (291163313992320).

255891084385024 is an abundant number, since it is smaller than the sum of its proper divisors (326435543599616).

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

255891084385024 is a wasteful number, since it uses less digits than its factorization.

255891084385024 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5995986 (or 5995972 counting only the distinct ones).

The product of its (nonzero) digits is 110592000, while the sum is 64.

The spelling of 255891084385024 in words is "two hundred fifty-five trillion, eight hundred ninety-one billion, eighty-four million, three hundred eighty-five thousand, twenty-four".