12787067496811 has 4 divisors (see below), whose sum is σ = 13228000858800. Its totient is φ = 12346134134824.

The previous prime is 12787067496787. The next prime is 12787067496829. The reversal of 12787067496811 is 11869476078721.

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 12787067496811 - 2¹¹ = 12787067494763 is a prime.

It is a Smith number, since the sum of its digits (67) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12787067494811) 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 in 3 ways as a sum of consecutive naturals, for example, 220466680951 + ... + 220466681008.

It is an arithmetic number, because the mean of its divisors is an integer number (3307000214700).

Almost surely, 2^{12787067496811} is an apocalyptic number.

12787067496811 is a deficient number, since it is larger than the sum of its proper divisors (440933361989).

12787067496811 is an equidigital number, since it uses as much as digits as its factorization.

12787067496811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 440933361988.

The product of its (nonzero) digits is 56899584, while the sum is 67.

The spelling of 12787067496811 in words is "twelve trillion, seven hundred eighty-seven billion, sixty-seven million, four hundred ninety-six thousand, eight hundred eleven".