11091000091 has 8 divisors (see below), whose sum is σ = 11479169520. Its totient is φ = 10703212128.

The previous prime is 11090999987. The next prime is 11091000143. The reversal of 11091000091 is 19000019011.

11091000091 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 11091000091 - 2¹¹ = 11090998043 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11091000391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35556 + ... + 153121.

It is an arithmetic number, because the mean of its divisors is an integer number (1434896190).

Almost surely, 2^11091000091 is an apocalyptic number.

11091000091 is a deficient number, since it is larger than the sum of its proper divisors (388169429).

11091000091 is a wasteful number, since it uses less digits than its factorization.

11091000091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190733.

The product of its (nonzero) digits is 81, while the sum is 22.

The spelling of 11091000091 in words is "eleven billion, ninety-one million, ninety-one", and thus it is an aban number and an uban number.