318718672543 has 2 divisors, whose sum is σ = 318718672544. Its totient is φ = 318718672542.

The previous prime is 318718672529. The next prime is 318718672627. The reversal of 318718672543 is 345276817813.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 318718672543 - 2¹³ = 318718664351 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (318718672513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 159359336271 + 159359336272.

It is an arithmetic number, because the mean of its divisors is an integer number (159359336272).

Almost surely, 2^318718672543 is an apocalyptic number.

318718672543 is a deficient number, since it is larger than the sum of its proper divisors (1).

318718672543 is an equidigital number, since it uses as much as digits as its factorization.

318718672543 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6773760, while the sum is 55.

The spelling of 318718672543 in words is "three hundred eighteen billion, seven hundred eighteen million, six hundred seventy-two thousand, five hundred forty-three".