566711555616 has 144 divisors (see below), whose sum is σ = 1635045834240. Its totient is φ = 186156472320.

The previous prime is 566711555593. The next prime is 566711555617. The reversal of 566711555616 is 616555117665.

566711555616 is a `hidden beast` number, since 5 + 6 + 6 + 7 + 1 + 15 + 5 + 5 + 616 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a super-2 number, since 2×566711555616² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (566711555617) 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, 55593016 + ... + 55603208.

It is an arithmetic number, because the mean of its divisors is an integer number (11354484960).

Almost surely, 2^566711555616 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 566711555616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (817522917120).

566711555616 is an abundant number, since it is smaller than the sum of its proper divisors (1068334278624).

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

566711555616 is a wasteful number, since it uses less digits than its factorization.

566711555616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12999 (or 12988 counting only the distinct ones).

The product of its digits is 5670000, while the sum is 54.

The spelling of 566711555616 in words is "five hundred sixty-six billion, seven hundred eleven million, five hundred fifty-five thousand, six hundred sixteen".