8999998666666 has 32 divisors (see below), whose sum is σ = 15491023200000. Its totient is φ = 3841538216832.

The previous prime is 8999998666657. The next prime is 8999998666679. The reversal of 8999998666666 is 6666668999998.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11090635 + ... + 11874433.

It is an arithmetic number, because the mean of its divisors is an integer number (484094475000).

Almost surely, 2^{8999998666666} is an apocalyptic number.

8999998666666 is a deficient number, since it is larger than the sum of its proper divisors (6491024533334).

8999998666666 is a wasteful number, since it uses less digits than its factorization.

8999998666666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 787126.

The product of its digits is 176319369216, while the sum is 97.

The spelling of 8999998666666 in words is "eight trillion, nine hundred ninety-nine billion, nine hundred ninety-eight million, six hundred sixty-six thousand, six hundred sixty-six".