11056011091 has 8 divisors (see below), whose sum is σ = 11353115840. Its totient is φ = 10760724072.

The previous prime is 11056011079. The next prime is 11056011139. The reversal of 11056011091 is 19011065011.

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 11056011091 - 2¹⁹ = 11055486803 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11056011991) 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, 442101 + ... + 466438.

It is an arithmetic number, because the mean of its divisors is an integer number (1419139480).

Almost surely, 2^11056011091 is an apocalyptic number.

11056011091 is a deficient number, since it is larger than the sum of its proper divisors (297104749).

11056011091 is an equidigital number, since it uses as much as digits as its factorization.

11056011091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 908865.

The product of its (nonzero) digits is 270, while the sum is 25.

The spelling of 11056011091 in words is "eleven billion, fifty-six million, eleven thousand, ninety-one".