255405681888 has 96 divisors (see below), whose sum is σ = 766295873280. Its totient is φ = 72965544960.

The previous prime is 255405681887. The next prime is 255405681889. The reversal of 255405681888 is 888186504552.

It is an interprime number because it is at equal distance from previous prime (255405681887) and next prime (255405681889).

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255405681887) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12145303 + ... + 12166313.

It is an arithmetic number, because the mean of its divisors is an integer number (7982248680).

Almost surely, 2^255405681888 is an apocalyptic number.

255405681888 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

255405681888 is an abundant number, since it is smaller than the sum of its proper divisors (510890191392).

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

255405681888 is a wasteful number, since it uses less digits than its factorization.

255405681888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39120 (or 39112 counting only the distinct ones).

The product of its (nonzero) digits is 24576000, while the sum is 60.

The spelling of 255405681888 in words is "two hundred fifty-five billion, four hundred five million, six hundred eighty-one thousand, eight hundred eighty-eight".