9966111116699 has 2 divisors, whose sum is σ = 9966111116700. Its totient is φ = 9966111116698.

The previous prime is 9966111116683. The next prime is 9966111116791.

9966111116699 is nontrivially palindromic in base 10.

It is a weak prime.

It is a palprime.

It is a cyclic number.

It is not a de Polignac number, because 9966111116699 - 2⁴ = 9966111116683 is a prime.

It is a zygodrome in base 10.

It is not a weakly prime, because it can be changed into another prime (9966111116639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4983055558349 + 4983055558350.

It is an arithmetic number, because the mean of its divisors is an integer number (4983055558350).

Almost surely, 2^{9966111116699} is an apocalyptic number.

9966111116699 is a deficient number, since it is larger than the sum of its proper divisors (1).

9966111116699 is an equidigital number, since it uses as much as digits as its factorization.

9966111116699 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8503056, while the sum is 65.

The spelling of 9966111116699 in words is "nine trillion, nine hundred sixty-six billion, one hundred eleven million, one hundred sixteen thousand, six hundred ninety-nine".