12736226309 has 2 divisors, whose sum is σ = 12736226310. Its totient is φ = 12736226308.

The previous prime is 12736226303. The next prime is 12736226323. The reversal of 12736226309 is 90362263721.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12465722500 + 270503809 = 111650^2 + 16447^2 .

It is a cyclic number.

It is not a de Polignac number, because 12736226309 - 2²⁰ = 12735177733 is a prime.

It is a super-2 number, since 2×12736226309² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12736226303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6368113154 + 6368113155.

It is an arithmetic number, because the mean of its divisors is an integer number (6368113155).

Almost surely, 2^12736226309 is an apocalyptic number.

It is an amenable number.

12736226309 is a deficient number, since it is larger than the sum of its proper divisors (1).

12736226309 is an equidigital number, since it uses as much as digits as its factorization.

12736226309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 163296, while the sum is 41.

The spelling of 12736226309 in words is "twelve billion, seven hundred thirty-six million, two hundred twenty-six thousand, three hundred nine".