99910089999 has 12 divisors (see below), whose sum is σ = 148969883712. Its totient is φ = 64458122400.

The previous prime is 99910089997. The next prime is 99910090019. The reversal of 99910089999 is 99998001999.

It is a happy number.

It is not a de Polignac number, because 99910089999 - 2¹ = 99910089997 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99910089997) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 179050062 + ... + 179050619.

It is an arithmetic number, because the mean of its divisors is an integer number (12414156976).

Almost surely, 2^99910089999 is an apocalyptic number.

99910089999 is a deficient number, since it is larger than the sum of its proper divisors (49059793713).

99910089999 is a wasteful number, since it uses less digits than its factorization.

99910089999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 358100718 (or 358100715 counting only the distinct ones).

The product of its (nonzero) digits is 38263752, while the sum is 72.

The spelling of 99910089999 in words is "ninety-nine billion, nine hundred ten million, eighty-nine thousand, nine hundred ninety-nine".