9988111118899 has 2 divisors, whose sum is σ = 9988111118900. Its totient is φ = 9988111118898.

The previous prime is 9988111118807. The next prime is 9988111118911.

9988111118899 is nontrivially palindromic in base 10.

It is a strong prime.

It is a palprime.

It is a cyclic number.

It is not a de Polignac number, because 9988111118899 - 2¹³ = 9988111110707 is a prime.

It is a zygodrome in base 10.

It is not a weakly prime, because it can be changed into another prime (9988118118899) 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, 4994055559449 + 4994055559450.

It is an arithmetic number, because the mean of its divisors is an integer number (4994055559450).

Almost surely, 2^{9988111118899} is an apocalyptic number.

9988111118899 is a deficient number, since it is larger than the sum of its proper divisors (1).

9988111118899 is an equidigital number, since it uses as much as digits as its factorization.

9988111118899 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 26873856, while the sum is 73.

The spelling of 9988111118899 in words is "nine trillion, nine hundred eighty-eight billion, one hundred eleven million, one hundred eighteen thousand, eight hundred ninety-nine".