255332315135440 has 80 divisors (see below), whose sum is σ = 602015197311360. Its totient is φ = 100693375301120.

The previous prime is 255332315135389. The next prime is 255332315135441. The reversal of 255332315135440 is 44531513233552.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255332315135441) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 749072727 + ... + 749413513.

It is an arithmetic number, because the mean of its divisors is an integer number (7525189966392).

Almost surely, 2^{255332315135440} is an apocalyptic number.

255332315135440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

255332315135440 is an abundant number, since it is smaller than the sum of its proper divisors (346682882175920).

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

255332315135440 is a wasteful number, since it uses less digits than its factorization.

255332315135440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 472780 (or 472774 counting only the distinct ones).

The product of its (nonzero) digits is 3240000, while the sum is 46.

Adding to 255332315135440 its reverse (44531513233552), we get a palindrome (299863828368992).

The spelling of 255332315135440 in words is "two hundred fifty-five trillion, three hundred thirty-two billion, three hundred fifteen million, one hundred thirty-five thousand, four hundred forty".