255430639392 has 48 divisors (see below), whose sum is σ = 671787597600. Its totient is φ = 84980731392.

The previous prime is 255430639337. The next prime is 255430639403. The reversal of 255430639392 is 293936034552.

It is a tau number, because it is divible by the number of its divisors (48).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2493517 + ... + 2593932.

It is an arithmetic number, because the mean of its divisors is an integer number (13995574950).

Almost surely, 2^255430639392 is an apocalyptic number.

It is an amenable number.

255430639392 is an abundant number, since it is smaller than the sum of its proper divisors (416356958208).

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

255430639392 is a wasteful number, since it uses less digits than its factorization.

255430639392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5087985 (or 5087977 counting only the distinct ones).

The product of its (nonzero) digits is 5248800, while the sum is 51.

The spelling of 255430639392 in words is "two hundred fifty-five billion, four hundred thirty million, six hundred thirty-nine thousand, three hundred ninety-two".