561604055623320 has 128 divisors (see below), whose sum is σ = 1697699123873280. Its totient is φ = 148615608960000.

The previous prime is 561604055623307. The next prime is 561604055623363. The reversal of 561604055623320 is 23326550406165.

It is a happy number.

It is a super-2 number, since 2×561604055623320² (a number of 30 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 561604055623320.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1204406220 + ... + 1204872420.

It is an arithmetic number, because the mean of its divisors is an integer number (13263274405260).

Almost surely, 2^{561604055623320} is an apocalyptic number.

It is an amenable number.

561604055623320 is an abundant number, since it is smaller than the sum of its proper divisors (1136095068249960).

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

561604055623320 is a wasteful number, since it uses less digits than its factorization.

561604055623320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 542977 (or 542973 counting only the distinct ones).

The product of its (nonzero) digits is 3888000, while the sum is 48.

The spelling of 561604055623320 in words is "five hundred sixty-one trillion, six hundred four billion, fifty-five million, six hundred twenty-three thousand, three hundred twenty".