561281030256 has 40 divisors (see below), whose sum is σ = 1450434805120. Its totient is φ = 187034475456.

The previous prime is 561281030237. The next prime is 561281030257. The reversal of 561281030256 is 652030182165.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561281030257) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 1696636 + ... + 2000283.

It is an arithmetic number, because the mean of its divisors is an integer number (36260870128).

Almost surely, 2^561281030256 is an apocalyptic number.

It is an amenable number.

561281030256 is an abundant number, since it is smaller than the sum of its proper divisors (889153774864).

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

561281030256 is a wasteful number, since it uses less digits than its factorization.

561281030256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3700093 (or 3700087 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 39.

The spelling of 561281030256 in words is "five hundred sixty-one billion, two hundred eighty-one million, thirty thousand, two hundred fifty-six".