9091011009091 has 8 divisors (see below), whose sum is σ = 10015659294768. Its totient is φ = 8182728180000.

The previous prime is 9091011009061. The next prime is 9091011009127. The reversal of 9091011009091 is 1909001101909.

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

It is not a de Polignac number, because 9091011009091 - 2²¹ = 9091008911939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9091011009061) 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, 4091362980 + ... + 4091365201.

It is an arithmetic number, because the mean of its divisors is an integer number (1251957411846).

Almost surely, 2^{9091011009091} is an apocalyptic number.

9091011009091 is a deficient number, since it is larger than the sum of its proper divisors (924648285677).

9091011009091 is a wasteful number, since it uses less digits than its factorization.

9091011009091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8182728293.

The product of its (nonzero) digits is 6561, while the sum is 40.

The spelling of 9091011009091 in words is "nine trillion, ninety-one billion, eleven million, nine thousand, ninety-one".