5666552556665 has 72 divisors (see below), whose sum is σ = 9249597290304. Its totient is φ = 3260673187200.

The previous prime is 5666552556649. The next prime is 5666552556683.

5666552556665 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 5666552556665 - 2⁴ = 5666552556649 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 5666552556595 and 5666552556604.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 3242951 + ... + 4674380.

It is an arithmetic number, because the mean of its divisors is an integer number (128466629032).

Almost surely, 2^{5666552556665} is an apocalyptic number.

5666552556665 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

5666552556665 is a deficient number, since it is larger than the sum of its proper divisors (3583044733639).

5666552556665 is a wasteful number, since it uses less digits than its factorization.

5666552556665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7917391 (or 7917367 counting only the distinct ones).

The product of its digits is 1458000000, while the sum is 68.

The spelling of 5666552556665 in words is "five trillion, six hundred sixty-six billion, five hundred fifty-two million, five hundred fifty-six thousand, six hundred sixty-five".