16491845323 has 2 divisors, whose sum is σ = 16491845324. Its totient is φ = 16491845322.

The previous prime is 16491845303. The next prime is 16491845353. The reversal of 16491845323 is 32354819461.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (32354819461) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16491845323 - 2¹⁷ = 16491714251 is a prime.

It is a super-3 number, since 3×16491845323³ (a number of 32 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (16491845303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8245922661 + 8245922662.

It is an arithmetic number, because the mean of its divisors is an integer number (8245922662).

Almost surely, 2^16491845323 is an apocalyptic number.

16491845323 is a deficient number, since it is larger than the sum of its proper divisors (1).

16491845323 is an equidigital number, since it uses as much as digits as its factorization.

16491845323 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 622080, while the sum is 46.

The spelling of 16491845323 in words is "sixteen billion, four hundred ninety-one million, eight hundred forty-five thousand, three hundred twenty-three".