13434643399 has 2 divisors, whose sum is σ = 13434643400. Its totient is φ = 13434643398.

The previous prime is 13434643373. The next prime is 13434643421. The reversal of 13434643399 is 99334643431.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13434643399 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13434643349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6717321699 + 6717321700.

It is an arithmetic number, because the mean of its divisors is an integer number (6717321700).

Almost surely, 2^13434643399 is an apocalyptic number.

13434643399 is a deficient number, since it is larger than the sum of its proper divisors (1).

13434643399 is an equidigital number, since it uses as much as digits as its factorization.

13434643399 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2519424, while the sum is 49.

The spelling of 13434643399 in words is "thirteen billion, four hundred thirty-four million, six hundred forty-three thousand, three hundred ninety-nine".