12718768481543 has 4 divisors (see below), whose sum is σ = 12718803957048. Its totient is φ = 12718733006040.

The previous prime is 12718768481539. The next prime is 12718768481623. The reversal of 12718768481543 is 34518486781721.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12718768481543 - 2² = 12718768481539 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12718768481543.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12718768481143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17194421 + ... + 17918862.

It is an arithmetic number, because the mean of its divisors is an integer number (3179700989262).

Almost surely, 2^{12718768481543} is an apocalyptic number.

12718768481543 is a deficient number, since it is larger than the sum of its proper divisors (35475505).

12718768481543 is an equidigital number, since it uses as much as digits as its factorization.

12718768481543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35475504.

The product of its digits is 72253440, while the sum is 65.

The spelling of 12718768481543 in words is "twelve trillion, seven hundred eighteen billion, seven hundred sixty-eight million, four hundred eighty-one thousand, five hundred forty-three".