13394626643 has 2 divisors, whose sum is σ = 13394626644. Its totient is φ = 13394626642.

The previous prime is 13394626607. The next prime is 13394626697. The reversal of 13394626643 is 34662649331.

It is a weak prime.

It is an emirp because it is prime and its reverse (34662649331) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13394626643 - 2⁸ = 13394626387 is a prime.

It is not a weakly prime, because it can be changed into another prime (13394626603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6697313321 + 6697313322.

It is an arithmetic number, because the mean of its divisors is an integer number (6697313322).

Almost surely, 2^13394626643 is an apocalyptic number.

13394626643 is a deficient number, since it is larger than the sum of its proper divisors (1).

13394626643 is an equidigital number, since it uses as much as digits as its factorization.

13394626643 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1679616, while the sum is 47.

The spelling of 13394626643 in words is "thirteen billion, three hundred ninety-four million, six hundred twenty-six thousand, six hundred forty-three".