561722360044 has 24 divisors (see below), whose sum is σ = 990806377680. Its totient is φ = 278637378816.

The previous prime is 561722360029. The next prime is 561722360077. The reversal of 561722360044 is 440063227165.

It is a junction number, because it is equal to n+sod(n) for n = 561722359979 and 561722360006.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 563199 + ... + 1200265.

It is an arithmetic number, because the mean of its divisors is an integer number (41283599070).

Almost surely, 2^561722360044 is an apocalyptic number.

It is an amenable number.

561722360044 is a deficient number, since it is larger than the sum of its proper divisors (429084017636).

561722360044 is a wasteful number, since it uses less digits than its factorization.

561722360044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 638817 (or 638815 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 40.

The spelling of 561722360044 in words is "five hundred sixty-one billion, seven hundred twenty-two million, three hundred sixty thousand, forty-four".