255561827598 has 96 divisors (see below), whose sum is σ = 720693918720. Its totient is φ = 66379687920.

The previous prime is 255561827579. The next prime is 255561827617. The reversal of 255561827598 is 895728165552.

255561827598 is a `hidden beast` number, since 2 + 5 + 5 + 5 + 6 + 18 + 27 + 598 = 666.

It is an interprime number because it is at equal distance from previous prime (255561827579) and next prime (255561827617).

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4361086 + ... + 4419297.

It is an arithmetic number, because the mean of its divisors is an integer number (7507228320).

Almost surely, 2^255561827598 is an apocalyptic number.

255561827598 is an abundant number, since it is smaller than the sum of its proper divisors (465132091122).

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

255561827598 is a wasteful number, since it uses less digits than its factorization.

255561827598 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8780419 (or 8780406 counting only the distinct ones).

The product of its digits is 60480000, while the sum is 63.

The spelling of 255561827598 in words is "two hundred fifty-five billion, five hundred sixty-one million, eight hundred twenty-seven thousand, five hundred ninety-eight".