561400007049 has 36 divisors (see below), whose sum is σ = 943361661060. Its totient is φ = 320780658240.

The previous prime is 561400006961. The next prime is 561400007183. The reversal of 561400007049 is 940700004165.

It can be written as a sum of positive squares in 2 ways, for example, as 350278136649 + 211121870400 = 591843^2 + 459480^2 .

It is not a de Polignac number, because 561400007049 - 2³⁵ = 527040268681 is a prime.

It is not an unprimeable number, because it can be changed into a prime (561400007249) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 10658719 + ... + 10711259.

It is an arithmetic number, because the mean of its divisors is an integer number (26204490585).

Almost surely, 2^561400007049 is an apocalyptic number.

It is an amenable number.

561400007049 is a deficient number, since it is larger than the sum of its proper divisors (381961654011).

561400007049 is a wasteful number, since it uses less digits than its factorization.

561400007049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76790 (or 76780 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The spelling of 561400007049 in words is "five hundred sixty-one billion, four hundred million, seven thousand, forty-nine".