255590135028 has 72 divisors (see below), whose sum is σ = 669259936800. Its totient is φ = 82147334976.

The previous prime is 255590134979. The next prime is 255590135029. The reversal of 255590135028 is 820531095552.

It is a happy number.

255590135028 is a `hidden beast` number, since 2 + 5 + 5 + 590 + 1 + 3 + 50 + 2 + 8 = 666.

255590135028 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255590135029) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 605875 + ... + 937157.

It is an arithmetic number, because the mean of its divisors is an integer number (9295276900).

Almost surely, 2^255590135028 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 255590135028, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (334629968400).

255590135028 is an abundant number, since it is smaller than the sum of its proper divisors (413669801772).

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

255590135028 is a wasteful number, since it uses less digits than its factorization.

255590135028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 332061 (or 332056 counting only the distinct ones).

The product of its (nonzero) digits is 540000, while the sum is 45.

The spelling of 255590135028 in words is "two hundred fifty-five billion, five hundred ninety million, one hundred thirty-five thousand, twenty-eight".