16324945391 has 2 divisors, whose sum is σ = 16324945392. Its totient is φ = 16324945390.

The previous prime is 16324945349. The next prime is 16324945409. The reversal of 16324945391 is 19354942361.

It is a strong prime.

It is an emirp because it is prime and its reverse (19354942361) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16324945391 - 2⁶ = 16324945327 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16324945291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8162472695 + 8162472696.

It is an arithmetic number, because the mean of its divisors is an integer number (8162472696).

Almost surely, 2^16324945391 is an apocalyptic number.

16324945391 is a deficient number, since it is larger than the sum of its proper divisors (1).

16324945391 is an equidigital number, since it uses as much as digits as its factorization.

16324945391 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 699840, while the sum is 47.

The spelling of 16324945391 in words is "sixteen billion, three hundred twenty-four million, nine hundred forty-five thousand, three hundred ninety-one".