13385726447 has 2 divisors, whose sum is σ = 13385726448. Its totient is φ = 13385726446.

The previous prime is 13385726413. The next prime is 13385726449. The reversal of 13385726447 is 74462758331.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13385726447 - 2⁸ = 13385726191 is a prime.

Together with 13385726449, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 13385726395 and 13385726404.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13385726449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6692863223 + 6692863224.

It is an arithmetic number, because the mean of its divisors is an integer number (6692863224).

Almost surely, 2^13385726447 is an apocalyptic number.

13385726447 is a deficient number, since it is larger than the sum of its proper divisors (1).

13385726447 is an equidigital number, since it uses as much as digits as its factorization.

13385726447 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3386880, while the sum is 50.

The spelling of 13385726447 in words is "thirteen billion, three hundred eighty-five million, seven hundred twenty-six thousand, four hundred forty-seven".