2560281382566 has 24 divisors (see below), whose sum is σ = 5839238241720. Its totient is φ = 808509910176.

The previous prime is 2560281382537. The next prime is 2560281382579. The reversal of 2560281382566 is 6652831820652.

2560281382566 is a `hidden beast` number, since 2 + 5 + 60 + 2 + 8 + 13 + 8 + 2 + 566 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3743101095 + ... + 3743101778.

It is an arithmetic number, because the mean of its divisors is an integer number (243301593405).

Almost surely, 2^{2560281382566} is an apocalyptic number.

2560281382566 is an abundant number, since it is smaller than the sum of its proper divisors (3278956859154).

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

2560281382566 is a wasteful number, since it uses less digits than its factorization.

2560281382566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7486202900 (or 7486202897 counting only the distinct ones).

The product of its (nonzero) digits is 8294400, while the sum is 54.

The spelling of 2560281382566 in words is "two trillion, five hundred sixty billion, two hundred eighty-one million, three hundred eighty-two thousand, five hundred sixty-six".