12646680043 has 2 divisors, whose sum is σ = 12646680044. Its totient is φ = 12646680042.

The previous prime is 12646680023. The next prime is 12646680049. The reversal of 12646680043 is 34008664621.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12646680043 - 2⁹ = 12646679531 is a prime.

It is a super-2 number, since 2×12646680043² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12646679978 and 12646680005.

It is not a weakly prime, because it can be changed into another prime (12646680049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6323340021 + 6323340022.

It is an arithmetic number, because the mean of its divisors is an integer number (6323340022).

Almost surely, 2^12646680043 is an apocalyptic number.

12646680043 is a deficient number, since it is larger than the sum of its proper divisors (1).

12646680043 is an equidigital number, since it uses as much as digits as its factorization.

12646680043 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 165888, while the sum is 40.

The spelling of 12646680043 in words is "twelve billion, six hundred forty-six million, six hundred eighty thousand, forty-three".