10909191110091 has 16 divisors (see below), whose sum is σ = 15550737306624. Its totient is φ = 6778526511744.

The previous prime is 10909191110089. The next prime is 10909191110341. The reversal of 10909191110091 is 19001119190901.

It is not a de Polignac number, because 10909191110091 - 2¹ = 10909191110089 is a prime.

It is not an unprimeable number, because it can be changed into a prime (10909191110071) 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, 1038371971 + ... + 1038382476.

It is an arithmetic number, because the mean of its divisors is an integer number (971921081664).

Almost surely, 2^{10909191110091} is an apocalyptic number.

10909191110091 is a deficient number, since it is larger than the sum of its proper divisors (4641546196533).

10909191110091 is a wasteful number, since it uses less digits than its factorization.

10909191110091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2076754570.

The product of its (nonzero) digits is 6561, while the sum is 42.

The spelling of 10909191110091 in words is "ten trillion, nine hundred nine billion, one hundred ninety-one million, one hundred ten thousand, ninety-one".