561328524686872 has 64 divisors (see below), whose sum is σ = 1124396087189760. Its totient is φ = 262077269731200.

The previous prime is 561328524686851. The next prime is 561328524686939. The reversal of 561328524686872 is 278686425823165.

It is a junction number, because it is equal to n+sod(n) for n = 561328524686795 and 561328524686804.

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, 4337154 + ... + 33785617.

It is an arithmetic number, because the mean of its divisors is an integer number (17568688862340).

Almost surely, 2^{561328524686872} is an apocalyptic number.

It is an amenable number.

561328524686872 is an abundant number, since it is smaller than the sum of its proper divisors (563067562502888).

561328524686872 is a wasteful number, since it uses less digits than its factorization.

561328524686872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38124704 (or 38124700 counting only the distinct ones).

The product of its digits is 1857945600, while the sum is 73.

The spelling of 561328524686872 in words is "five hundred sixty-one trillion, three hundred twenty-eight billion, five hundred twenty-four million, six hundred eighty-six thousand, eight hundred seventy-two".