13641431009 has 2 divisors, whose sum is σ = 13641431010. Its totient is φ = 13641431008.

The previous prime is 13641430981. The next prime is 13641431033. The reversal of 13641431009 is 90013414631.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11099254609 + 2542176400 = 105353^2 + 50420^2 .

It is a cyclic number.

It is not a de Polignac number, because 13641431009 - 2⁸ = 13641430753 is a prime.

It is not a weakly prime, because it can be changed into another prime (13641431059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6820715504 + 6820715505.

It is an arithmetic number, because the mean of its divisors is an integer number (6820715505).

Almost surely, 2^13641431009 is an apocalyptic number.

It is an amenable number.

13641431009 is a deficient number, since it is larger than the sum of its proper divisors (1).

13641431009 is an equidigital number, since it uses as much as digits as its factorization.

13641431009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7776, while the sum is 32.

The spelling of 13641431009 in words is "thirteen billion, six hundred forty-one million, four hundred thirty-one thousand, nine".