561868708608 has 108 divisors (see below), whose sum is σ = 1623665851080. Its totient is φ = 186866454528.

The previous prime is 561868708603. The next prime is 561868708633. The reversal of 561868708608 is 806807868165.

561868708608 is a `hidden beast` number, since 5 + 6 + 18 + 6 + 8 + 7 + 0 + 8 + 608 = 666.

It is a super-2 number, since 2×561868708608² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (561868708603) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 745428 + ... + 1295916.

Almost surely, 2^561868708608 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 561868708608, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (811832925540).

561868708608 is an abundant number, since it is smaller than the sum of its proper divisors (1061797142472).

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

561868708608 is a wasteful number, since it uses less digits than its factorization.

561868708608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 550954 (or 550937 counting only the distinct ones).

The product of its (nonzero) digits is 30965760, while the sum is 63.

The spelling of 561868708608 in words is "five hundred sixty-one billion, eight hundred sixty-eight million, seven hundred eight thousand, six hundred eight".