1091093910911 has 4 divisors (see below), whose sum is σ = 1097189407800. Its totient is φ = 1084998414024.

The previous prime is 1091093910883. The next prime is 1091093910967. The reversal of 1091093910911 is 1190193901901.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1091093910911 - 2³⁴ = 1073914041727 is a prime.

It is a super-2 number, since 2×1091093910911² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1091093910211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3047748176 + ... + 3047748533.

It is an arithmetic number, because the mean of its divisors is an integer number (274297351950).

Almost surely, 2^{1091093910911} is an apocalyptic number.

1091093910911 is a deficient number, since it is larger than the sum of its proper divisors (6095496889).

1091093910911 is an equidigital number, since it uses as much as digits as its factorization.

1091093910911 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6095496888.

The product of its (nonzero) digits is 19683, while the sum is 44.

The spelling of 1091093910911 in words is "one trillion, ninety-one billion, ninety-three million, nine hundred ten thousand, nine hundred eleven".