13665389273 has 2 divisors, whose sum is σ = 13665389274. Its totient is φ = 13665389272.

The previous prime is 13665389239. The next prime is 13665389321. The reversal of 13665389273 is 37298356631.

13665389273 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., 7791239824 + 5874149449 = 88268^2 + 76643^2 .

It is a cyclic number.

It is not a de Polignac number, because 13665389273 - 2²² = 13661194969 is a prime.

It is not a weakly prime, because it can be changed into another prime (13665389203) 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, 6832694636 + 6832694637.

It is an arithmetic number, because the mean of its divisors is an integer number (6832694637).

Almost surely, 2^13665389273 is an apocalyptic number.

It is an amenable number.

13665389273 is a deficient number, since it is larger than the sum of its proper divisors (1).

13665389273 is an equidigital number, since it uses as much as digits as its factorization.

13665389273 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4898880, while the sum is 53.

The spelling of 13665389273 in words is "thirteen billion, six hundred sixty-five million, three hundred eighty-nine thousand, two hundred seventy-three".