13443064643 has 2 divisors, whose sum is σ = 13443064644. Its totient is φ = 13443064642.

The previous prime is 13443064639. The next prime is 13443064651. The reversal of 13443064643 is 34646034431.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13443064643 - 2² = 13443064639 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13443064597 and 13443064606.

It is not a weakly prime, because it can be changed into another prime (13443064043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6721532321 + 6721532322.

It is an arithmetic number, because the mean of its divisors is an integer number (6721532322).

Almost surely, 2^13443064643 is an apocalyptic number.

13443064643 is a deficient number, since it is larger than the sum of its proper divisors (1).

13443064643 is an equidigital number, since it uses as much as digits as its factorization.

13443064643 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 248832, while the sum is 38.

The spelling of 13443064643 in words is "thirteen billion, four hundred forty-three million, sixty-four thousand, six hundred forty-three".