11999210689 has 2 divisors, whose sum is σ = 11999210690. Its totient is φ = 11999210688.

The previous prime is 11999210669. The next prime is 11999210711. The reversal of 11999210689 is 98601299911.

11999210689 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8608128400 + 3391082289 = 92780^2 + 58233^2 .

It is a cyclic number.

It is not a de Polignac number, because 11999210689 - 2¹⁵ = 11999177921 is a prime.

It is not a weakly prime, because it can be changed into another prime (11999210669) 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 as a sum of consecutive naturals, namely, 5999605344 + 5999605345.

It is an arithmetic number, because the mean of its divisors is an integer number (5999605345).

Almost surely, 2^11999210689 is an apocalyptic number.

It is an amenable number.

11999210689 is a deficient number, since it is larger than the sum of its proper divisors (1).

11999210689 is an equidigital number, since it uses as much as digits as its factorization.

11999210689 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 629856, while the sum is 55.

The spelling of 11999210689 in words is "eleven billion, nine hundred ninety-nine million, two hundred ten thousand, six hundred eighty-nine".