9099099909909 has 20 divisors (see below), whose sum is σ = 13690270242880. Its totient is φ = 6022425832200.

The previous prime is 9099099909869. The next prime is 9099099909947.

9099099909909 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 9099099909909 - 2²¹ = 9099097812757 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (81).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9099099909709) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 404069917 + ... + 404092434.

It is an arithmetic number, because the mean of its divisors is an integer number (684513512144).

Almost surely, 2^{9099099909909} is an apocalyptic number.

It is an amenable number.

9099099909909 is a deficient number, since it is larger than the sum of its proper divisors (4591170332971).

9099099909909 is a wasteful number, since it uses less digits than its factorization.

9099099909909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 808162502 (or 808162493 counting only the distinct ones).

The product of its (nonzero) digits is 387420489, while the sum is 81.

The spelling of 9099099909909 in words is "nine trillion, ninety-nine billion, ninety-nine million, nine hundred nine thousand, nine hundred nine".