12288841909 has 4 divisors (see below), whose sum is σ = 12370225120. Its totient is φ = 12207458700.

The previous prime is 12288841897. The next prime is 12288841937. The reversal of 12288841909 is 90914888221.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12288841909 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12288841949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40691379 + ... + 40691680.

It is an arithmetic number, because the mean of its divisors is an integer number (3092556280).

Almost surely, 2^12288841909 is an apocalyptic number.

It is an amenable number.

12288841909 is a deficient number, since it is larger than the sum of its proper divisors (81383211).

12288841909 is an equidigital number, since it uses as much as digits as its factorization.

12288841909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81383210.

The product of its (nonzero) digits is 663552, while the sum is 52.

The spelling of 12288841909 in words is "twelve billion, two hundred eighty-eight million, eight hundred forty-one thousand, nine hundred nine".