12006205663 has 2 divisors, whose sum is σ = 12006205664. Its totient is φ = 12006205662.

The previous prime is 12006205661. The next prime is 12006205691. The reversal of 12006205663 is 36650260021.

12006205663 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 is a cyclic number.

It is not a de Polignac number, because 12006205663 - 2¹ = 12006205661 is a prime.

Together with 12006205661, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12006205661) 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, 6003102831 + 6003102832.

It is an arithmetic number, because the mean of its divisors is an integer number (6003102832).

Almost surely, 2^12006205663 is an apocalyptic number.

12006205663 is a deficient number, since it is larger than the sum of its proper divisors (1).

12006205663 is an equidigital number, since it uses as much as digits as its factorization.

12006205663 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12960, while the sum is 31.

Adding to 12006205663 its reverse (36650260021), we get a palindrome (48656465684).

The spelling of 12006205663 in words is "twelve billion, six million, two hundred five thousand, six hundred sixty-three".