255866680869744 has 320 divisors, whose sum is σ = 825697460551680. Its totient is φ = 66581467361280.

The previous prime is 255866680869719. The next prime is 255866680869817. The reversal of 255866680869744 is 447968086668552.

It is a Harshad number since it is a multiple of its sum of digits (84).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 6127201537 + ... + 6127243295.

It is an arithmetic number, because the mean of its divisors is an integer number (2580304564224).

Almost surely, 2^{255866680869744} is an apocalyptic number.

255866680869744 is a gapful number since it is divisible by the number (24) 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 255866680869744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (412848730275840).

255866680869744 is an abundant number, since it is smaller than the sum of its proper divisors (569830779681936).

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

255866680869744 is a wasteful number, since it uses less digits than its factorization.

255866680869744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76428 (or 76422 counting only the distinct ones).

The product of its (nonzero) digits is 33443020800, while the sum is 84.

The spelling of 255866680869744 in words is "two hundred fifty-five trillion, eight hundred sixty-six billion, six hundred eighty million, eight hundred sixty-nine thousand, seven hundred forty-four".