12878206846643 has 2 divisors, whose sum is σ = 12878206846644. Its totient is φ = 12878206846642.

The previous prime is 12878206846627. The next prime is 12878206846649. The reversal of 12878206846643 is 34664860287821.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12878206846643 - 2⁴ = 12878206846627 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12878206846643.

It is not a weakly prime, because it can be changed into another prime (12878206846649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6439103423321 + 6439103423322.

It is an arithmetic number, because the mean of its divisors is an integer number (6439103423322).

Almost surely, 2^{12878206846643} is an apocalyptic number.

12878206846643 is a deficient number, since it is larger than the sum of its proper divisors (1).

12878206846643 is an equidigital number, since it uses as much as digits as its factorization.

12878206846643 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 148635648, while the sum is 65.

The spelling of 12878206846643 in words is "twelve trillion, eight hundred seventy-eight billion, two hundred six million, eight hundred forty-six thousand, six hundred forty-three".