9999099909999 has 192 divisors, whose sum is σ = 16069110220800. Its totient is φ = 5967017312256.

The previous prime is 9999099909959. The next prime is 9999099910003.

9999099909999 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 9999099909999 - 2¹² = 9999099905903 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9999099909959) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 7535116074 + ... + 7535117400.

It is an arithmetic number, because the mean of its divisors is an integer number (83693282400).

Almost surely, 2^{9999099909999} is an apocalyptic number.

9999099909999 is a deficient number, since it is larger than the sum of its proper divisors (6070010310801).

9999099909999 is a wasteful number, since it uses less digits than its factorization.

9999099909999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1694 (or 1691 counting only the distinct ones).

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

The spelling of 9999099909999 in words is "nine trillion, nine hundred ninety-nine billion, ninety-nine million, nine hundred nine thousand, nine hundred ninety-nine".