561322060655560 has 64 divisors (see below), whose sum is σ = 1286928235457280. Its totient is φ = 220271222396160.

The previous prime is 561322060655519. The next prime is 561322060655581. The reversal of 561322060655560 is 65556060223165.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 561322060655498 and 561322060655507.

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, 9288349 + ... + 34769491.

It is an arithmetic number, because the mean of its divisors is an integer number (20108253679020).

Almost surely, 2^{561322060655560} is an apocalyptic number.

It is an amenable number.

561322060655560 is an abundant number, since it is smaller than the sum of its proper divisors (725606174801720).

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

561322060655560 is a wasteful number, since it uses less digits than its factorization.

561322060655560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25491598 (or 25491594 counting only the distinct ones).

The product of its (nonzero) digits is 9720000, while the sum is 52.

The spelling of 561322060655560 in words is "five hundred sixty-one trillion, three hundred twenty-two billion, sixty million, six hundred fifty-five thousand, five hundred sixty".