9091000000999 has 8 divisors (see below), whose sum is σ = 10389789623808. Its totient is φ = 7792229212440.

The previous prime is 9091000000991. The next prime is 9091000001009. The reversal of 9091000000999 is 9990000001909.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 9091000000999 - 2³ = 9091000000991 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9091000000991) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3658627 + ... + 5618500.

It is an arithmetic number, because the mean of its divisors is an integer number (1298723702976).

Almost surely, 2^{9091000000999} is an apocalyptic number.

9091000000999 is a deficient number, since it is larger than the sum of its proper divisors (1298789622809).

9091000000999 is a wasteful number, since it uses less digits than its factorization.

9091000000999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9417125.

The product of its (nonzero) digits is 59049, while the sum is 46.

The spelling of 9091000000999 in words is "nine trillion, ninety-one billion, nine hundred ninety-nine", and thus it is an aban number.