561613652056 has 16 divisors (see below), whose sum is σ = 1098809319600. Its totient is φ = 268597833504.

The previous prime is 561613652023. The next prime is 561613652063. The reversal of 561613652056 is 650256316165.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is a junction number, because it is equal to n+sod(n) for n = 561613651997 and 561613652015.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1526123871 + ... + 1526124238.

It is an arithmetic number, because the mean of its divisors is an integer number (68675582475).

Almost surely, 2^561613652056 is an apocalyptic number.

It is an amenable number.

561613652056 is a deficient number, since it is larger than the sum of its proper divisors (537195667544).

561613652056 is a wasteful number, since it uses less digits than its factorization.

561613652056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3052248138 (or 3052248134 counting only the distinct ones).

The product of its (nonzero) digits is 972000, while the sum is 46.

The spelling of 561613652056 in words is "five hundred sixty-one billion, six hundred thirteen million, six hundred fifty-two thousand, fifty-six".