255587094840 has 1536 divisors, whose sum is σ = 1077108480000. Its totient is φ = 48283361280.

The previous prime is 255587094787. The next prime is 255587094941. The reversal of 255587094840 is 48490785552.

It is a Harshad number since it is a multiple of its sum of digits (57).

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 383 ways as a sum of consecutive naturals, for example, 3501193044 + ... + 3501193116.

It is an arithmetic number, because the mean of its divisors is an integer number (701242500).

Almost surely, 2^255587094840 is an apocalyptic number.

255587094840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 255587094840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (538554240000).

255587094840 is an abundant number, since it is smaller than the sum of its proper divisors (821521385160).

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

255587094840 is a wasteful number, since it uses less digits than its factorization.

255587094840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186 (or 157 counting only the distinct ones).

The product of its (nonzero) digits is 16128000, while the sum is 57.

The spelling of 255587094840 in words is "two hundred fifty-five billion, five hundred eighty-seven million, ninety-four thousand, eight hundred forty".