561566051044 has 36 divisors (see below), whose sum is σ = 1004346790524. Its totient is φ = 274739972416.

The previous prime is 561566051041. The next prime is 561566051051. The reversal of 561566051044 is 440150665165.

It can be written as a sum of positive squares in 2 ways, for example, as 99043642944 + 462522408100 = 314712^2 + 680090^2 .

It is not an unprimeable number, because it can be changed into a prime (561566051041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 69385062 + ... + 69393154.

It is an arithmetic number, because the mean of its divisors is an integer number (27898521959).

Almost surely, 2^561566051044 is an apocalyptic number.

It is an amenable number.

561566051044 is a deficient number, since it is larger than the sum of its proper divisors (442780739480).

561566051044 is a wasteful number, since it uses less digits than its factorization.

561566051044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16044 (or 15995 counting only the distinct ones).

The product of its (nonzero) digits is 432000, while the sum is 43.

The spelling of 561566051044 in words is "five hundred sixty-one billion, five hundred sixty-six million, fifty-one thousand, forty-four".