561352373630840 has 64 divisors (see below), whose sum is σ = 1377869547519360. Its totient is φ = 204127449877120.

The previous prime is 561352373630831. The next prime is 561352373630921. The reversal of 561352373630840 is 48036373253165.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 139568219 + ... + 143533941.

It is an arithmetic number, because the mean of its divisors is an integer number (21529211679990).

Almost surely, 2^{561352373630840} is an apocalyptic number.

It is an amenable number.

561352373630840 is an abundant number, since it is smaller than the sum of its proper divisors (816517173888520).

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

561352373630840 is a wasteful number, since it uses less digits than its factorization.

561352373630840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4287452 (or 4287448 counting only the distinct ones).

The product of its (nonzero) digits is 32659200, while the sum is 56.

The spelling of 561352373630840 in words is "five hundred sixty-one trillion, three hundred fifty-two billion, three hundred seventy-three million, six hundred thirty thousand, eight hundred forty".