5666005015561 has 8 divisors (see below), whose sum is σ = 6202192276224. Its totient is φ = 5133333737520.

The previous prime is 5666005015549. The next prime is 5666005015579. The reversal of 5666005015561 is 1655105006665.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 5666005015561 - 2¹⁷ = 5666004884489 is a prime.

It is a super-2 number, since 2×5666005015561² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5666005015501) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 878992281 + ... + 878998726.

It is an arithmetic number, because the mean of its divisors is an integer number (775274034528).

Almost surely, 2^{5666005015561} is an apocalyptic number.

It is an amenable number.

5666005015561 is a deficient number, since it is larger than the sum of its proper divisors (536187260663).

5666005015561 is a wasteful number, since it uses less digits than its factorization.

5666005015561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1757991311.

The product of its (nonzero) digits is 810000, while the sum is 46.

The spelling of 5666005015561 in words is "five trillion, six hundred sixty-six billion, five million, fifteen thousand, five hundred sixty-one".