12918334678 has 4 divisors (see below), whose sum is σ = 19377502020. Its totient is φ = 6459167338.

The previous prime is 12918334661. The next prime is 12918334687. The reversal of 12918334678 is 87643381921.

12918334678 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3229583668 + ... + 3229583671.

It is an arithmetic number, because the mean of its divisors is an integer number (4844375505).

Almost surely, 2^12918334678 is an apocalyptic number.

12918334678 is a deficient number, since it is larger than the sum of its proper divisors (6459167342).

12918334678 is an equidigital number, since it uses as much as digits as its factorization.

12918334678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6459167341.

The product of its digits is 1741824, while the sum is 52.

The spelling of 12918334678 in words is "twelve billion, nine hundred eighteen million, three hundred thirty-four thousand, six hundred seventy-eight".