5666688866665 has 16 divisors (see below), whose sum is σ = 6806657387520. Its totient is φ = 4528932384960.

The previous prime is 5666688866603. The next prime is 5666688866681.

5666688866665 is nontrivially palindromic in base 10.

5666688866665 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 5666688866665 - 2²⁹ = 5666151995753 is a prime.

It is a super-2 number, since 2×5666688866665² (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 15 ways as a sum of consecutive naturals, for example, 25799176 + ... + 26017894.

It is an arithmetic number, because the mean of its divisors is an integer number (425416086720).

Almost surely, 2^{5666688866665} is an apocalyptic number.

It is an amenable number.

5666688866665 is a deficient number, since it is larger than the sum of its proper divisors (1139968520855).

5666688866665 is a wasteful number, since it uses less digits than its factorization.

5666688866665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223752.

The product of its digits is 21499084800, while the sum is 82.

The spelling of 5666688866665 in words is "five trillion, six hundred sixty-six billion, six hundred eighty-eight million, eight hundred sixty-six thousand, six hundred sixty-five".