5666511560066 has 64 divisors (see below), whose sum is σ = 10273136670720. Its totient is φ = 2292579072000.

The previous prime is 5666511560033. The next prime is 5666511560161. The reversal of 5666511560066 is 6600651156665.

It is a happy number.

It is a super-2 number, since 2×5666511560066² (a number of 26 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 244139870 + ... + 244163078.

It is an arithmetic number, because the mean of its divisors is an integer number (160517760480).

Almost surely, 2^{5666511560066} is an apocalyptic number.

5666511560066 is a deficient number, since it is larger than the sum of its proper divisors (4606625110654).

5666511560066 is a wasteful number, since it uses less digits than its factorization.

5666511560066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37011.

The product of its (nonzero) digits is 5832000, while the sum is 53.

The spelling of 5666511560066 in words is "five trillion, six hundred sixty-six billion, five hundred eleven million, five hundred sixty thousand, sixty-six".