13218973243271 has 2 divisors, whose sum is σ = 13218973243272. Its totient is φ = 13218973243270.

The previous prime is 13218973243193. The next prime is 13218973243309. The reversal of 13218973243271 is 17234237981231.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13218973243271 - 2¹⁰ = 13218973242247 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13218973243471) 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 as a sum of consecutive naturals, namely, 6609486621635 + 6609486621636.

It is an arithmetic number, because the mean of its divisors is an integer number (6609486621636).

Almost surely, 2^{13218973243271} is an apocalyptic number.

13218973243271 is a deficient number, since it is larger than the sum of its proper divisors (1).

13218973243271 is an equidigital number, since it uses as much as digits as its factorization.

13218973243271 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3048192, while the sum is 53.

The spelling of 13218973243271 in words is "thirteen trillion, two hundred eighteen billion, nine hundred seventy-three million, two hundred forty-three thousand, two hundred seventy-one".