255139660800 has 792 divisors, whose sum is σ = 970130616000. Its totient is φ = 63886786560.

The previous prime is 255139660733. The next prime is 255139660823. The reversal of 255139660800 is 8066931552.

255139660800 is a `hidden beast` number, since 2 + 5 + 5 + 1 + 39 + 6 + 608 + 0 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 731059026 + ... + 731059374.

Almost surely, 2^255139660800 is an apocalyptic number.

255139660800 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 255139660800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (485065308000).

255139660800 is an abundant number, since it is smaller than the sum of its proper divisors (714990955200).

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

255139660800 is a wasteful number, since it uses less digits than its factorization.

255139660800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 571 (or 545 counting only the distinct ones).

The product of its (nonzero) digits is 388800, while the sum is 45.

The spelling of 255139660800 in words is "two hundred fifty-five billion, one hundred thirty-nine million, six hundred sixty thousand, eight hundred".