13641330809 has 2 divisors, whose sum is σ = 13641330810. Its totient is φ = 13641330808.

The previous prime is 13641330761. The next prime is 13641330817. The reversal of 13641330809 is 90803314631.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13607922409 + 33408400 = 116653^2 + 5780^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13641330809 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (13641300809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6820665404 + 6820665405.

It is an arithmetic number, because the mean of its divisors is an integer number (6820665405).

Almost surely, 2^13641330809 is an apocalyptic number.

It is an amenable number.

13641330809 is a deficient number, since it is larger than the sum of its proper divisors (1).

13641330809 is an equidigital number, since it uses as much as digits as its factorization.

13641330809 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 46656, while the sum is 38.

The spelling of 13641330809 in words is "thirteen billion, six hundred forty-one million, three hundred thirty thousand, eight hundred nine".