13665482009 has 2 divisors, whose sum is σ = 13665482010. Its totient is φ = 13665482008.

The previous prime is 13665481981. The next prime is 13665482021. The reversal of 13665482009 is 90028456631.

13665482009 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13596259609 + 69222400 = 116603^2 + 8320^2 .

It is a cyclic number.

It is not a de Polignac number, because 13665482009 - 2¹⁶ = 13665416473 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (13665482029) 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, 6832741004 + 6832741005.

It is an arithmetic number, because the mean of its divisors is an integer number (6832741005).

Almost surely, 2^13665482009 is an apocalyptic number.

It is an amenable number.

13665482009 is a deficient number, since it is larger than the sum of its proper divisors (1).

13665482009 is an equidigital number, since it uses as much as digits as its factorization.

13665482009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 311040, while the sum is 44.

The spelling of 13665482009 in words is "thirteen billion, six hundred sixty-five million, four hundred eighty-two thousand, nine".