11091171841 has 4 divisors (see below), whose sum is σ = 11743593732. Its totient is φ = 10438749952.

The previous prime is 11091171809. The next prime is 11091171851. The reversal of 11091171841 is 14817119011.

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

It can be written as a sum of positive squares in 2 ways, for example, as 4789193616 + 6301978225 = 69204^2 + 79385^2 .

It is a cyclic number.

It is not a de Polignac number, because 11091171841 - 2⁵ = 11091171809 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11091171797 and 11091171806.

It is not an unprimeable number, because it can be changed into a prime (11091171851) 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, 326210920 + ... + 326210953.

It is an arithmetic number, because the mean of its divisors is an integer number (2935898433).

Almost surely, 2^11091171841 is an apocalyptic number.

It is an amenable number.

11091171841 is a deficient number, since it is larger than the sum of its proper divisors (652421891).

11091171841 is an equidigital number, since it uses as much as digits as its factorization.

11091171841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 652421890.

The product of its (nonzero) digits is 2016, while the sum is 34.

The spelling of 11091171841 in words is "eleven billion, ninety-one million, one hundred seventy-one thousand, eight hundred forty-one".