255822687648 has 432 divisors, whose sum is σ = 814850644608. Its totient is φ = 76062412800.

The previous prime is 255822687619. The next prime is 255822687671. The reversal of 255822687648 is 846786228552.

It is a happy number.

255822687648 is a `hidden beast` number, since 2 + 5 + 582 + 2 + 6 + 8 + 7 + 6 + 48 = 666.

It is an unprimeable number.

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 71 ways as a sum of consecutive naturals, for example, 697064361 + ... + 697064727.

It is an arithmetic number, because the mean of its divisors is an integer number (1886228344).

Almost surely, 2^255822687648 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 255822687648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (407425322304).

255822687648 is an abundant number, since it is smaller than the sum of its proper divisors (559027956960).

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

255822687648 is a wasteful number, since it uses less digits than its factorization.

255822687648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 729 (or 707 counting only the distinct ones).

The product of its digits is 103219200, while the sum is 63.

The spelling of 255822687648 in words is "two hundred fifty-five billion, eight hundred twenty-two million, six hundred eighty-seven thousand, six hundred forty-eight".