561016066056 has 96 divisors (see below), whose sum is σ = 1482648300000. Its totient is φ = 176864503552.

The previous prime is 561016066027. The next prime is 561016066057. The reversal of 561016066056 is 650660610165.

It is a junction number, because it is equal to n+sod(n) for n = 561016065999 and 561016066017.

It is not an unprimeable number, because it can be changed into a prime (561016066057) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 881695 + ... + 1378193.

It is an arithmetic number, because the mean of its divisors is an integer number (15444253125).

Almost surely, 2^561016066056 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 561016066056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (741324150000).

561016066056 is an abundant number, since it is smaller than the sum of its proper divisors (921632233944).

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

561016066056 is a wasteful number, since it uses less digits than its factorization.

561016066056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 496643 (or 496616 counting only the distinct ones).

The product of its (nonzero) digits is 194400, while the sum is 42.

The spelling of 561016066056 in words is "five hundred sixty-one billion, sixteen million, sixty-six thousand, fifty-six".