9966888886699 has 2 divisors, whose sum is σ = 9966888886700. Its totient is φ = 9966888886698.

The previous prime is 9966888886693. The next prime is 9966888886733.

9966888886699 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 9966888886699 - 2¹¹ = 9966888884651 is a prime.

It is a zygodrome in base 10.

It is not a weakly prime, because it can be changed into another prime (9966888886693) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4983444443349 + 4983444443350.

It is an arithmetic number, because the mean of its divisors is an integer number (4983444443350).

Almost surely, 2^{9966888886699} is an apocalyptic number.

9966888886699 is a deficient number, since it is larger than the sum of its proper divisors (1).

9966888886699 is an equidigital number, since it uses as much as digits as its factorization.

9966888886699 is an evil number, because the sum of its binary digits is even.

The product of its digits is 278628139008, while the sum is 100.

The spelling of 9966888886699 in words is "nine trillion, nine hundred sixty-six billion, eight hundred eighty-eight million, eight hundred eighty-six thousand, six hundred ninety-nine".