13236441643 has 2 divisors, whose sum is σ = 13236441644. Its totient is φ = 13236441642.

The previous prime is 13236441641. The next prime is 13236441653. The reversal of 13236441643 is 34614463231.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13236441643 - 2¹ = 13236441641 is a prime.

Together with 13236441641, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (13236441641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6618220821 + 6618220822.

It is an arithmetic number, because the mean of its divisors is an integer number (6618220822).

Almost surely, 2^13236441643 is an apocalyptic number.

13236441643 is a deficient number, since it is larger than the sum of its proper divisors (1).

13236441643 is an equidigital number, since it uses as much as digits as its factorization.

13236441643 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 124416, while the sum is 37.

The spelling of 13236441643 in words is "thirteen billion, two hundred thirty-six million, four hundred forty-one thousand, six hundred forty-three".