255567757140 has 144 divisors (see below), whose sum is σ = 786910405008. Its totient is φ = 67126413312.

The previous prime is 255567757139. The next prime is 255567757187. The reversal of 255567757140 is 41757765552.

255567757140 is a `hidden beast` number, since 2 + 5 + 5 + 5 + 67 + 7 + 571 + 4 + 0 = 666.

255567757140 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 15142286916 + 240425470224 = 123054^2 + 490332^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 9934134 + ... + 9959826.

Almost surely, 2^255567757140 is an apocalyptic number.

255567757140 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 255567757140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (393455202504).

255567757140 is an abundant number, since it is smaller than the sum of its proper divisors (531342647868).

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

255567757140 is a wasteful number, since it uses less digits than its factorization.

255567757140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26538 (or 26533 counting only the distinct ones).

The product of its (nonzero) digits is 10290000, while the sum is 54.

The spelling of 255567757140 in words is "two hundred fifty-five billion, five hundred sixty-seven million, seven hundred fifty-seven thousand, one hundred forty".