12834780863789 has 2 divisors, whose sum is σ = 12834780863790. Its totient is φ = 12834780863788.

The previous prime is 12834780863689. The next prime is 12834780863791. The reversal of 12834780863789 is 98736808743821.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12707499598564 + 127281265225 = 3564758^2 + 356765^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12834780863789 is a prime.

Together with 12834780863791, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12834780863689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6417390431894 + 6417390431895.

It is an arithmetic number, because the mean of its divisors is an integer number (6417390431895).

Almost surely, 2^{12834780863789} is an apocalyptic number.

It is an amenable number.

12834780863789 is a deficient number, since it is larger than the sum of its proper divisors (1).

12834780863789 is an equidigital number, since it uses as much as digits as its factorization.

12834780863789 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 780337152, while the sum is 74.

The spelling of 12834780863789 in words is "twelve trillion, eight hundred thirty-four billion, seven hundred eighty million, eight hundred sixty-three thousand, seven hundred eighty-nine".