255057642444 has 144 divisors (see below), whose sum is σ = 702692879616. Its totient is φ = 71370624000.

The previous prime is 255057642443. The next prime is 255057642449. The reversal of 255057642444 is 444246750552.

It is a junction number, because it is equal to n+sod(n) for n = 255057642393 and 255057642402.

It is not an unprimeable number, because it can be changed into a prime (255057642443) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1958769 + ... + 2084919.

It is an arithmetic number, because the mean of its divisors is an integer number (4879811664).

Almost surely, 2^255057642444 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 255057642444, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (351346439808).

255057642444 is an abundant number, since it is smaller than the sum of its proper divisors (447635237172).

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

255057642444 is a wasteful number, since it uses less digits than its factorization.

255057642444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126256 (or 126237 counting only the distinct ones).

The product of its (nonzero) digits is 5376000, while the sum is 48.

The spelling of 255057642444 in words is "two hundred fifty-five billion, fifty-seven million, six hundred forty-two thousand, four hundred forty-four".