5666106066661 has 8 divisors (see below), whose sum is σ = 5809402589760. Its totient is φ = 5523333480672.

The previous prime is 5666106066659. The next prime is 5666106066683. The reversal of 5666106066661 is 1666606016665.

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 5666106066661 - 2¹ = 5666106066659 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5666106066961) 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, 130962376 + ... + 131005633.

It is an arithmetic number, because the mean of its divisors is an integer number (726175323720).

Almost surely, 2^{5666106066661} is an apocalyptic number.

It is an amenable number.

5666106066661 is a deficient number, since it is larger than the sum of its proper divisors (143296523099).

5666106066661 is a wasteful number, since it uses less digits than its factorization.

5666106066661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261968555.

The product of its (nonzero) digits is 8398080, while the sum is 55.

The spelling of 5666106066661 in words is "five trillion, six hundred sixty-six billion, one hundred six million, sixty-six thousand, six hundred sixty-one".