5655550660666 has 16 divisors (see below), whose sum is σ = 8761226646528. Its totient is φ = 2735230215600.

The previous prime is 5655550660601. The next prime is 5655550660673. The reversal of 5655550660666 is 6660660555565.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21980325 + ... + 22236136.

It is an arithmetic number, because the mean of its divisors is an integer number (547576665408).

Almost surely, 2^{5655550660666} is an apocalyptic number.

5655550660666 is a deficient number, since it is larger than the sum of its proper divisors (3105675985862).

5655550660666 is a wasteful number, since it uses less digits than its factorization.

5655550660666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44218557.

The product of its (nonzero) digits is 145800000, while the sum is 61.

The spelling of 5655550660666 in words is "five trillion, six hundred fifty-five billion, five hundred fifty million, six hundred sixty thousand, six hundred sixty-six".