255982784580 has 288 divisors, whose sum is σ = 818947584000. Its totient is φ = 64631623680.

The previous prime is 255982784539. The next prime is 255982784581. The reversal of 255982784580 is 85487289552.

255982784580 is a `hidden beast` number, since 2 + 559 + 8 + 2 + 78 + 4 + 5 + 8 + 0 = 666.

It is not an unprimeable number, because it can be changed into a prime (255982784581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 128054421 + ... + 128056419.

It is an arithmetic number, because the mean of its divisors is an integer number (2843568000).

Almost surely, 2^255982784580 is an apocalyptic number.

255982784580 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 255982784580, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (409473792000).

255982784580 is an abundant number, since it is smaller than the sum of its proper divisors (562964799420).

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

255982784580 is a wasteful number, since it uses less digits than its factorization.

255982784580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2531 (or 2526 counting only the distinct ones).

The product of its (nonzero) digits is 64512000, while the sum is 63.

The spelling of 255982784580 in words is "two hundred fifty-five billion, nine hundred eighty-two million, seven hundred eighty-four thousand, five hundred eighty".