566605676787681 has 32 divisors (see below), whose sum is σ = 800609412925440. Its totient is φ = 355208201394176.

The previous prime is 566605676787671. The next prime is 566605676787697. The reversal of 566605676787681 is 186787676506665.

It is a cyclic number.

It is not a de Polignac number, because 566605676787681 - 2¹⁷ = 566605676656609 is a prime.

It is a super-2 number, since 2×566605676787681² (a number of 30 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 566605676787594 and 566605676787603.

It is not an unprimeable number, because it can be changed into a prime (566605676787641) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1166652160 + ... + 1167137726.

It is an arithmetic number, because the mean of its divisors is an integer number (25019044153920).

Almost surely, 2^{566605676787681} is an apocalyptic number.

566605676787681 is a gapful number since it is divisible by the number (51) formed by its first and last digit.

It is an amenable number.

566605676787681 is a deficient number, since it is larger than the sum of its proper divisors (234003736137759).

566605676787681 is a wasteful number, since it uses less digits than its factorization.

566605676787681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 505433.

The product of its (nonzero) digits is 25604812800, while the sum is 84.

The spelling of 566605676787681 in words is "five hundred sixty-six trillion, six hundred five billion, six hundred seventy-six million, seven hundred eighty-seven thousand, six hundred eighty-one".