12826910309 has 2 divisors, whose sum is σ = 12826910310. Its totient is φ = 12826910308.

The previous prime is 12826910303. The next prime is 12826910323. The reversal of 12826910309 is 90301962821.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11755330084 + 1071580225 = 108422^2 + 32735^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12826910309 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12826910303) 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, 6413455154 + 6413455155.

It is an arithmetic number, because the mean of its divisors is an integer number (6413455155).

Almost surely, 2^12826910309 is an apocalyptic number.

It is an amenable number.

12826910309 is a deficient number, since it is larger than the sum of its proper divisors (1).

12826910309 is an equidigital number, since it uses as much as digits as its factorization.

12826910309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 46656, while the sum is 41.

The spelling of 12826910309 in words is "twelve billion, eight hundred twenty-six million, nine hundred ten thousand, three hundred nine".