16564301216 has 24 divisors (see below), whose sum is σ = 32977389060. Its totient is φ = 8189091328.

The previous prime is 16564301189. The next prime is 16564301267. The reversal of 16564301216 is 61210346561.

It can be written as a sum of positive squares in 2 ways, for example, as 16543104400 + 21196816 = 128620^2 + 4604^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2905211 + ... + 2910906.

Almost surely, 2^16564301216 is an apocalyptic number.

16564301216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

16564301216 is a deficient number, since it is larger than the sum of its proper divisors (16413087844).

16564301216 is an equidigital number, since it uses as much as digits as its factorization.

16564301216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5816216 (or 5816208 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 35.

Adding to 16564301216 its reverse (61210346561), we get a palindrome (77774647777).

The spelling of 16564301216 in words is "sixteen billion, five hundred sixty-four million, three hundred one thousand, two hundred sixteen".