255243360320 has 112 divisors (see below), whose sum is σ = 655232357808. Its totient is φ = 94145740800.

The previous prime is 255243360319. The next prime is 255243360341. The reversal of 255243360320 is 23063342552.

It can be written as a sum of positive squares in 8 ways, for example, as 16349202496 + 238894157824 = 127864^2 + 488768^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4032920 + ... + 4095720.

It is an arithmetic number, because the mean of its divisors is an integer number (5850288909).

Almost surely, 2^255243360320 is an apocalyptic number.

255243360320 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 255243360320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (327616178904).

255243360320 is an abundant number, since it is smaller than the sum of its proper divisors (399988997488).

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

255243360320 is a wasteful number, since it uses less digits than its factorization.

255243360320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63808 (or 63798 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 35.

The spelling of 255243360320 in words is "two hundred fifty-five billion, two hundred forty-three million, three hundred sixty thousand, three hundred twenty".