11959244209 has 12 divisors (see below), whose sum is σ = 13149693508. Its totient is φ = 10868394240.

The previous prime is 11959244207. The next prime is 11959244239. The reversal of 11959244209 is 90244295911.

It is a happy number.

11959244209 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 8482962609 + 3476281600 = 92103^2 + 58960^2 .

It is not a de Polignac number, because 11959244209 - 2¹ = 11959244207 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11959244207) 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 11 ways as a sum of consecutive naturals, for example, 385957 + ... + 415789.

Almost surely, 2^11959244209 is an apocalyptic number.

It is an amenable number.

11959244209 is a deficient number, since it is larger than the sum of its proper divisors (1190449299).

11959244209 is a wasteful number, since it uses less digits than its factorization.

11959244209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33168 (or 33157 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 46.

The spelling of 11959244209 in words is "eleven billion, nine hundred fifty-nine million, two hundred forty-four thousand, two hundred nine".