12678669929 has 2 divisors, whose sum is σ = 12678669930. Its totient is φ = 12678669928.

The previous prime is 12678669917. The next prime is 12678670019. The reversal of 12678669929 is 92996687621.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11897355625 + 781314304 = 109075^2 + 27952^2 .

It is a cyclic number.

It is not a de Polignac number, because 12678669929 - 2²⁴ = 12661892713 is a prime.

It is not a weakly prime, because it can be changed into another prime (12678669329) 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, 6339334964 + 6339334965.

It is an arithmetic number, because the mean of its divisors is an integer number (6339334965).

Almost surely, 2^12678669929 is an apocalyptic number.

It is an amenable number.

12678669929 is a deficient number, since it is larger than the sum of its proper divisors (1).

12678669929 is an equidigital number, since it uses as much as digits as its factorization.

12678669929 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 35271936, while the sum is 65.

The spelling of 12678669929 in words is "twelve billion, six hundred seventy-eight million, six hundred sixty-nine thousand, nine hundred twenty-nine".