255229239005440 has 576 divisors, whose sum is σ = 731697632870400. Its totient is φ = 83456978780160.

The previous prime is 255229239005339. The next prime is 255229239005441. The reversal of 255229239005440 is 44500932922552.

It is not an unprimeable number, because it can be changed into a prime (255229239005441) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 29340062211 + ... + 29340070909.

It is an arithmetic number, because the mean of its divisors is an integer number (1270308390400).

Almost surely, 2^{255229239005440} is an apocalyptic number.

255229239005440 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 255229239005440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (365848816435200).

255229239005440 is an abundant number, since it is smaller than the sum of its proper divisors (476468393864960).

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

255229239005440 is a wasteful number, since it uses less digits than its factorization.

255229239005440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10278 (or 10264 counting only the distinct ones).

The product of its (nonzero) digits is 7776000, while the sum is 52.

The spelling of 255229239005440 in words is "two hundred fifty-five trillion, two hundred twenty-nine billion, two hundred thirty-nine million, five thousand, four hundred forty".