9091091909201 has 16 divisors (see below), whose sum is σ = 9169584238080. Its totient is φ = 9012899058240.

The previous prime is 9091091909161. The next prime is 9091091909227. The reversal of 9091091909201 is 1029091901909.

It is a cyclic number.

It is not a de Polignac number, because 9091091909201 - 2²² = 9091087714897 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 9091091909201.

It is not an unprimeable number, because it can be changed into a prime (9091091909231) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 256004435 + ... + 256039943.

It is an arithmetic number, because the mean of its divisors is an integer number (573099014880).

Almost surely, 2^{9091091909201} is an apocalyptic number.

It is an amenable number.

9091091909201 is a deficient number, since it is larger than the sum of its proper divisors (78492328879).

9091091909201 is a wasteful number, since it uses less digits than its factorization.

9091091909201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39664.

The product of its (nonzero) digits is 118098, while the sum is 50.

The spelling of 9091091909201 in words is "nine trillion, ninety-one billion, ninety-one million, nine hundred nine thousand, two hundred one".