255871187712 has 720 divisors, whose sum is σ = 933638207040. Its totient is φ = 68032659456.

The previous prime is 255871187707. The next prime is 255871187713. The reversal of 255871187712 is 217781178552.

255871187712 is a `hidden beast` number, since 2 + 558 + 7 + 1 + 1 + 8 + 77 + 12 = 666.

It is a super-2 number, since 2×255871187712² (a number of 24 digits) contains 22 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (255871187713) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 239355114 + ... + 239356182.

It is an arithmetic number, because the mean of its divisors is an integer number (1296719732).

Almost surely, 2^255871187712 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 255871187712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (466819103520).

255871187712 is an abundant number, since it is smaller than the sum of its proper divisors (677767019328).

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

255871187712 is a wasteful number, since it uses less digits than its factorization.

255871187712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1218 (or 1195 counting only the distinct ones).

The product of its digits is 2195200, while the sum is 54.

The spelling of 255871187712 in words is "two hundred fifty-five billion, eight hundred seventy-one million, one hundred eighty-seven thousand, seven hundred twelve".