16216564423 has 2 divisors, whose sum is σ = 16216564424. Its totient is φ = 16216564422.

The previous prime is 16216564417. The next prime is 16216564457. The reversal of 16216564423 is 32446561261.

16216564423 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 16216564423 - 2²¹ = 16214467271 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16216564523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8108282211 + 8108282212.

It is an arithmetic number, because the mean of its divisors is an integer number (8108282212).

Almost surely, 2^16216564423 is an apocalyptic number.

16216564423 is a deficient number, since it is larger than the sum of its proper divisors (1).

16216564423 is an equidigital number, since it uses as much as digits as its factorization.

16216564423 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 207360, while the sum is 40.

The spelling of 16216564423 in words is "sixteen billion, two hundred sixteen million, five hundred sixty-four thousand, four hundred twenty-three".