55663116666 has 8 divisors (see below), whose sum is σ = 111326233344. Its totient is φ = 18554372220.

The previous prime is 55663116583. The next prime is 55663116671. The reversal of 55663116666 is 66661136655.

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

55663116666 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4638593050 + ... + 4638593061.

It is an arithmetic number, because the mean of its divisors is an integer number (13915779168).

Almost surely, 2^55663116666 is an apocalyptic number.

55663116666 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

55663116666 is a wasteful number, since it uses less digits than its factorization.

55663116666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9277186116.

The product of its digits is 3499200, while the sum is 51.

The spelling of 55663116666 in words is "fifty-five billion, six hundred sixty-three million, one hundred sixteen thousand, six hundred sixty-six".