9090000000909 has 36 divisors (see below), whose sum is σ = 13265506610356. Its totient is φ = 5998091040000.

The previous prime is 9090000000869. The next prime is 9090000000941.

9090000000909 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 6 ways, for example, as 1408843180809 + 7681156820100 = 1186947^2 + 2771490^2 .

It is a de Polignac number, because none of the positive numbers 2^k-9090000000909 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9090000004909) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 325081689 + ... + 325109649.

Almost surely, 2^{9090000000909} is an apocalyptic number.

It is an amenable number.

9090000000909 is a deficient number, since it is larger than the sum of its proper divisors (4175506609447).

9090000000909 is a wasteful number, since it uses less digits than its factorization.

9090000000909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31710 (or 31606 counting only the distinct ones).

The product of its (nonzero) digits is 6561, while the sum is 36.

It can be divided in two parts, 9090000000 and 909, that added together give a palindrome (9090000909).

The spelling of 9090000000909 in words is "nine trillion, ninety billion, nine hundred nine", and thus it is an aban number.