13344616891 has 2 divisors, whose sum is σ = 13344616892. Its totient is φ = 13344616890.

The previous prime is 13344616889. The next prime is 13344616897. The reversal of 13344616891 is 19861644331.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13344616891 - 2¹ = 13344616889 is a prime.

Together with 13344616889, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (13344616897) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6672308445 + 6672308446.

It is an arithmetic number, because the mean of its divisors is an integer number (6672308446).

Almost surely, 2^13344616891 is an apocalyptic number.

13344616891 is a deficient number, since it is larger than the sum of its proper divisors (1).

13344616891 is an equidigital number, since it uses as much as digits as its factorization.

13344616891 is an evil number, because the sum of its binary digits is even.

The product of its digits is 373248, while the sum is 46.

The spelling of 13344616891 in words is "thirteen billion, three hundred forty-four million, six hundred sixteen thousand, eight hundred ninety-one".