255611679912 has 120 divisors (see below), whose sum is σ = 723126873150. Its totient is φ = 84358108800.

The previous prime is 255611679899. The next prime is 255611679913. The reversal of 255611679912 is 219976116552.

255611679912 is a `hidden beast` number, since 2 + 5 + 5 + 611 + 6 + 7 + 9 + 9 + 12 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 255596980356 + 14699556 = 505566^2 + 3834^2 .

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

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 (255611679913) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 6590914 + ... + 6629582.

Almost surely, 2^255611679912 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 255611679912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (361563436575).

255611679912 is an abundant number, since it is smaller than the sum of its proper divisors (467515193238).

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

255611679912 is a wasteful number, since it uses less digits than its factorization.

255611679912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38889 (or 38775 counting only the distinct ones).

The product of its digits is 2041200, while the sum is 54.

The spelling of 255611679912 in words is "two hundred fifty-five billion, six hundred eleven million, six hundred seventy-nine thousand, nine hundred twelve".