6731349218369 has 2 divisors, whose sum is σ = 6731349218370. Its totient is φ = 6731349218368.

The previous prime is 6731349218309. The next prime is 6731349218401. The reversal of 6731349218369 is 9638129431376.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5479400819344 + 1251948399025 = 2340812^2 + 1118905^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6731349218369 is a prime.

It is a super-2 number, since 2×6731349218369² (a number of 26 digits) contains 22 as substring.

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 (6731349218309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3365674609184 + 3365674609185.

It is an arithmetic number, because the mean of its divisors is an integer number (3365674609185).

Almost surely, 2^{6731349218369} is an apocalyptic number.

It is an amenable number.

6731349218369 is a deficient number, since it is larger than the sum of its proper divisors (1).

6731349218369 is an equidigital number, since it uses as much as digits as its factorization.

6731349218369 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 35271936, while the sum is 62.

The spelling of 6731349218369 in words is "six trillion, seven hundred thirty-one billion, three hundred forty-nine million, two hundred eighteen thousand, three hundred sixty-nine".