12734139409 has 2 divisors, whose sum is σ = 12734139410. Its totient is φ = 12734139408.

The previous prime is 12734139361. The next prime is 12734139419. The reversal of 12734139409 is 90493143721.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7614307600 + 5119831809 = 87260^2 + 71553^2 .

It is a cyclic number.

It is not a de Polignac number, because 12734139409 - 2¹⁷ = 12734008337 is a prime.

It is not a weakly prime, because it can be changed into another prime (12734139419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6367069704 + 6367069705.

It is an arithmetic number, because the mean of its divisors is an integer number (6367069705).

Almost surely, 2^12734139409 is an apocalyptic number.

It is an amenable number.

12734139409 is a deficient number, since it is larger than the sum of its proper divisors (1).

12734139409 is an equidigital number, since it uses as much as digits as its factorization.

12734139409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 163296, while the sum is 43.

The spelling of 12734139409 in words is "twelve billion, seven hundred thirty-four million, one hundred thirty-nine thousand, four hundred nine".