16363343121217 has 2 divisors, whose sum is σ = 16363343121218. Its totient is φ = 16363343121216.

The previous prime is 16363343121161. The next prime is 16363343121247. The reversal of 16363343121217 is 71212134336361.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8380237578496 + 7983105542721 = 2894864^2 + 2825439^2 .

It is a cyclic number.

It is not a de Polignac number, because 16363343121217 - 2¹¹ = 16363343119169 is a prime.

It is a super-2 number, since 2×16363343121217² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (16363343121247) 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, 8181671560608 + 8181671560609.

It is an arithmetic number, because the mean of its divisors is an integer number (8181671560609).

Almost surely, 2^{16363343121217} is an apocalyptic number.

It is an amenable number.

16363343121217 is a deficient number, since it is larger than the sum of its proper divisors (1).

16363343121217 is an equidigital number, since it uses as much as digits as its factorization.

16363343121217 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 326592, while the sum is 43.

Adding to 16363343121217 its reverse (71212134336361), we get a palindrome (87575477457578).

The spelling of 16363343121217 in words is "sixteen trillion, three hundred sixty-three billion, three hundred forty-three million, one hundred twenty-one thousand, two hundred seventeen".