255561698700 has 720 divisors, whose sum is σ = 1093649001984. Its totient is φ = 49977907200.

The previous prime is 255561698677. The next prime is 255561698719. The reversal of 255561698700 is 7896165552.

255561698700 is a `hidden beast` number, since 2 + 5 + 5 + 561 + 6 + 9 + 8 + 70 + 0 = 666.

255561698700 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 239 ways as a sum of consecutive naturals, for example, 10590849 + ... + 10614951.

Almost surely, 2^255561698700 is an apocalyptic number.

255561698700 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 255561698700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (546824500992).

255561698700 is an abundant number, since it is smaller than the sum of its proper divisors (838087303284).

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

255561698700 is a wasteful number, since it uses less digits than its factorization.

255561698700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24164 (or 24148 counting only the distinct ones).

The product of its (nonzero) digits is 4536000, while the sum is 54.

The spelling of 255561698700 in words is "two hundred fifty-five billion, five hundred sixty-one million, six hundred ninety-eight thousand, seven hundred".