11668889911 has 32 divisors (see below), whose sum is σ = 14223500928. Its totient is φ = 9363548160.

The previous prime is 11668889899. The next prime is 11668889917. The reversal of 11668889911 is 11998886611.

11668889911 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 11668889911 - 2⁷ = 11668889783 is a prime.

11668889911 is a strobogrammatic number because it is the same when read upside-down.

It is a zygodrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11668889917) 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 31 ways as a sum of consecutive naturals, for example, 767661 + ... + 782713.

It is an arithmetic number, because the mean of its divisors is an integer number (444484404).

Almost surely, 2^11668889911 is an apocalyptic number.

11668889911 is a deficient number, since it is larger than the sum of its proper divisors (2554611017).

11668889911 is a wasteful number, since it uses less digits than its factorization.

11668889911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15211.

The product of its digits is 1492992, while the sum is 58.

The spelling of 11668889911 in words is "eleven billion, six hundred sixty-eight million, eight hundred eighty-nine thousand, nine hundred eleven".