5318521438319 has 2 divisors, whose sum is σ = 5318521438320. Its totient is φ = 5318521438318.

The previous prime is 5318521438303. The next prime is 5318521438339. The reversal of 5318521438319 is 9138341258135.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 5318521438319 - 2⁴ = 5318521438303 is a prime.

It is a super-2 number, since 2×5318521438319² (a number of 26 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5318521438339) 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, 2659260719159 + 2659260719160.

It is an arithmetic number, because the mean of its divisors is an integer number (2659260719160).

Almost surely, 2^{5318521438319} is an apocalyptic number.

5318521438319 is a deficient number, since it is larger than the sum of its proper divisors (1).

5318521438319 is an equidigital number, since it uses as much as digits as its factorization.

5318521438319 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3110400, while the sum is 53.

The spelling of 5318521438319 in words is "five trillion, three hundred eighteen billion, five hundred twenty-one million, four hundred thirty-eight thousand, three hundred nineteen".