12861946079 has 2 divisors, whose sum is σ = 12861946080. Its totient is φ = 12861946078.

The previous prime is 12861946073. The next prime is 12861946093. The reversal of 12861946079 is 97064916821.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12861946079 - 2²⁰ = 12860897503 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12861946079.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12861946073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6430973039 + 6430973040.

It is an arithmetic number, because the mean of its divisors is an integer number (6430973040).

Almost surely, 2^12861946079 is an apocalyptic number.

12861946079 is a deficient number, since it is larger than the sum of its proper divisors (1).

12861946079 is an equidigital number, since it uses as much as digits as its factorization.

12861946079 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1306368, while the sum is 53.

The spelling of 12861946079 in words is "twelve billion, eight hundred sixty-one million, nine hundred forty-six thousand, seventy-nine".