13626235309 has 2 divisors, whose sum is σ = 13626235310. Its totient is φ = 13626235308.

The previous prime is 13626235303. The next prime is 13626235429. The reversal of 13626235309 is 90353262631.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13145310409 + 480924900 = 114653^2 + 21930^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13626235309 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13626235303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6813117654 + 6813117655.

It is an arithmetic number, because the mean of its divisors is an integer number (6813117655).

Almost surely, 2^13626235309 is an apocalyptic number.

It is an amenable number.

13626235309 is a deficient number, since it is larger than the sum of its proper divisors (1).

13626235309 is an equidigital number, since it uses as much as digits as its factorization.

13626235309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 174960, while the sum is 40.

The spelling of 13626235309 in words is "thirteen billion, six hundred twenty-six million, two hundred thirty-five thousand, three hundred nine".