13518203447213 has 2 divisors, whose sum is σ = 13518203447214. Its totient is φ = 13518203447212.

The previous prime is 13518203447167. The next prime is 13518203447251. The reversal of 13518203447213 is 31274430281531.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7756681746724 + 5761521700489 = 2785082^2 + 2400317^2 .

It is an emirp because it is prime and its reverse (31274430281531) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13518203447213 - 2²⁰ = 13518202398637 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13518203447813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6759101723606 + 6759101723607.

It is an arithmetic number, because the mean of its divisors is an integer number (6759101723607).

Almost surely, 2^{13518203447213} is an apocalyptic number.

It is an amenable number.

13518203447213 is a deficient number, since it is larger than the sum of its proper divisors (1).

13518203447213 is an equidigital number, since it uses as much as digits as its factorization.

13518203447213 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 483840, while the sum is 44.

The spelling of 13518203447213 in words is "thirteen trillion, five hundred eighteen billion, two hundred three million, four hundred forty-seven thousand, two hundred thirteen".