9999900099999 has 48 divisors (see below), whose sum is σ = 15724802830464. Its totient is φ = 6098822553600.

The previous prime is 9999900099971. The next prime is 9999900100007.

9999900099999 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 9999900099999 - 2⁵ = 9999900099967 is a prime.

It is a zygodrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9999900199999) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1241194 + ... + 4641159.

It is an arithmetic number, because the mean of its divisors is an integer number (327600058968).

Almost surely, 2^{9999900099999} is an apocalyptic number.

9999900099999 is a deficient number, since it is larger than the sum of its proper divisors (5724902730465).

9999900099999 is a wasteful number, since it uses less digits than its factorization.

9999900099999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5882688 (or 5882685 counting only the distinct ones).

The product of its (nonzero) digits is 3486784401, while the sum is 90.

The spelling of 9999900099999 in words is "nine trillion, nine hundred ninety-nine billion, nine hundred million, ninety-nine thousand, nine hundred ninety-nine".