5660055657666 has 24 divisors (see below), whose sum is σ = 12278247025980. Its totient is φ = 1884409357536.

The previous prime is 5660055657661. The next prime is 5660055657709. The reversal of 5660055657666 is 6667565500665.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 5021502838641 + 638552819025 = 2240871^2 + 799095^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (5660055657661) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 189639805 + ... + 189669648.

Almost surely, 2^{5660055657666} is an apocalyptic number.

5660055657666 is an abundant number, since it is smaller than the sum of its proper divisors (6618191368314).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5660055657666 is a wasteful number, since it uses less digits than its factorization.

5660055657666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 379310290 (or 379310287 counting only the distinct ones).

The product of its (nonzero) digits is 204120000, while the sum is 63.

The spelling of 5660055657666 in words is "five trillion, six hundred sixty billion, fifty-five million, six hundred fifty-seven thousand, six hundred sixty-six".