5666115661613 has 16 divisors (see below), whose sum is σ = 6252133003200. Its totient is φ = 5091944753280.

The previous prime is 5666115661601. The next prime is 5666115661627. The reversal of 5666115661613 is 3161665116665.

It is not a de Polignac number, because 5666115661613 - 2⁸ = 5666115661357 is a prime.

It is a super-2 number, since 2×5666115661613² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5666115661673) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3517403 + ... + 4868711.

It is an arithmetic number, because the mean of its divisors is an integer number (390758312700).

Almost surely, 2^{5666115661613} is an apocalyptic number.

It is an amenable number.

5666115661613 is a deficient number, since it is larger than the sum of its proper divisors (586017341587).

5666115661613 is a wasteful number, since it uses less digits than its factorization.

5666115661613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1355692.

The product of its digits is 3499200, while the sum is 53.

The spelling of 5666115661613 in words is "five trillion, six hundred sixty-six billion, one hundred fifteen million, six hundred sixty-one thousand, six hundred thirteen".