12768238967838 has 8 divisors (see below), whose sum is σ = 25536477935688. Its totient is φ = 4256079655944.

The previous prime is 12768238967761. The next prime is 12768238967843. The reversal of 12768238967838 is 83876983286721.

It is a sphenic number, since it is the product of 3 distinct primes.

12768238967838 is an admirable number.

It is a congruent number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 1064019913981 + ... + 1064019913992.

It is an arithmetic number, because the mean of its divisors is an integer number (3192059741961).

Almost surely, 2^{12768238967838} is an apocalyptic number.

12768238967838 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12768238967838 is a wasteful number, since it uses less digits than its factorization.

12768238967838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2128039827978.

The product of its digits is 2341011456, while the sum is 78.

The spelling of 12768238967838 in words is "twelve trillion, seven hundred sixty-eight billion, two hundred thirty-eight million, nine hundred sixty-seven thousand, eight hundred thirty-eight".