5660611006661 has 8 divisors (see below), whose sum is σ = 6099544107384. Its totient is φ = 5222178118080.

The previous prime is 5660611006601. The next prime is 5660611006777. The reversal of 5660611006661 is 1666001160665.

It can be written as a sum of positive squares in 4 ways, for example, as 886975938436 + 4773635068225 = 941794^2 + 2184865^2 .

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 5660611006661 - 2¹⁴ = 5660610990277 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5660611006601) 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, 125029526 + ... + 125074791.

It is an arithmetic number, because the mean of its divisors is an integer number (762443013423).

Almost surely, 2^{5660611006661} is an apocalyptic number.

It is an amenable number.

5660611006661 is a deficient number, since it is larger than the sum of its proper divisors (438933100723).

5660611006661 is a wasteful number, since it uses less digits than its factorization.

5660611006661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250106071.

The product of its (nonzero) digits is 233280, while the sum is 44.

The spelling of 5660611006661 in words is "five trillion, six hundred sixty billion, six hundred eleven million, six thousand, six hundred sixty-one".