12904016729 has 2 divisors, whose sum is σ = 12904016730. Its totient is φ = 12904016728.

The previous prime is 12904016717. The next prime is 12904016743. The reversal of 12904016729 is 92761040921.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8357616400 + 4546400329 = 91420^2 + 67427^2 .

It is an emirp because it is prime and its reverse (92761040921) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12904016729 - 2³² = 8609049433 is a prime.

It is not a weakly prime, because it can be changed into another prime (12904016789) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6452008364 + 6452008365.

It is an arithmetic number, because the mean of its divisors is an integer number (6452008365).

Almost surely, 2^12904016729 is an apocalyptic number.

It is an amenable number.

12904016729 is a deficient number, since it is larger than the sum of its proper divisors (1).

12904016729 is an equidigital number, since it uses as much as digits as its factorization.

12904016729 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54432, while the sum is 41.

The spelling of 12904016729 in words is "twelve billion, nine hundred four million, sixteen thousand, seven hundred twenty-nine".