11009090911 has 32 divisors (see below), whose sum is σ = 14366298240. Its totient is φ = 8186904576.

The previous prime is 11009090909. The next prime is 11009090929. The reversal of 11009090911 is 11909090011.

It is a cyclic number.

It is not a de Polignac number, because 11009090911 - 2¹ = 11009090909 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11009090311) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1228495 + ... + 1237423.

It is an arithmetic number, because the mean of its divisors is an integer number (448946820).

Almost surely, 2^11009090911 is an apocalyptic number.

11009090911 is a deficient number, since it is larger than the sum of its proper divisors (3357207329).

11009090911 is a wasteful number, since it uses less digits than its factorization.

11009090911 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9763.

The product of its (nonzero) digits is 729, while the sum is 31.

The spelling of 11009090911 in words is "eleven billion, nine million, ninety thousand, nine hundred eleven".