255324718656 has 504 divisors, whose sum is σ = 867229883520. Its totient is φ = 71599417344.

The previous prime is 255324718651. The next prime is 255324718661. The reversal of 255324718656 is 656817423552.

255324718656 is a `hidden beast` number, since 2 + 5 + 532 + 47 + 1 + 8 + 65 + 6 = 666.

It is an interprime number because it is at equal distance from previous prime (255324718651) and next prime (255324718661).

It is a tau number, because it is divible by the number of its divisors (504).

It is not an unprimeable number, because it can be changed into a prime (255324718651) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 684516486 + ... + 684516858.

Almost surely, 2^255324718656 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 255324718656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (433614941760).

255324718656 is an abundant number, since it is smaller than the sum of its proper divisors (611905164864).

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

255324718656 is a wasteful number, since it uses less digits than its factorization.

255324718656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 791 (or 771 counting only the distinct ones).

The product of its digits is 12096000, while the sum is 54.

The spelling of 255324718656 in words is "two hundred fifty-five billion, three hundred twenty-four million, seven hundred eighteen thousand, six hundred fifty-six".