9990999990999 has 6 divisors (see below), whose sum is σ = 14431444431456. Its totient is φ = 6660666660660.

The previous prime is 9990999990947. The next prime is 9990999991009.

9990999990999 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 9990999990999 - 2⁸ = 9990999990743 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9990999980999) 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 in 5 ways as a sum of consecutive naturals, for example, 555055555047 + ... + 555055555064.

It is an arithmetic number, because the mean of its divisors is an integer number (2405240738576).

Almost surely, 2^{9990999990999} is an apocalyptic number.

9990999990999 is a deficient number, since it is larger than the sum of its proper divisors (4440444440457).

9990999990999 is a wasteful number, since it uses less digits than its factorization.

9990999990999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1110111110117 (or 1110111110114 counting only the distinct ones).

The product of its (nonzero) digits is 31381059609, while the sum is 99.

The spelling of 9990999990999 in words is "nine trillion, nine hundred ninety billion, nine hundred ninety-nine million, nine hundred ninety thousand, nine hundred ninety-nine".