16326564497 has 2 divisors, whose sum is σ = 16326564498. Its totient is φ = 16326564496.

The previous prime is 16326564487. The next prime is 16326564503. The reversal of 16326564497 is 79446562361.

16326564497 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10975495696 + 5351068801 = 104764^2 + 73151^2 .

It is a cyclic number.

It is not a de Polignac number, because 16326564497 - 2⁶ = 16326564433 is a prime.

It is not a weakly prime, because it can be changed into another prime (16326564427) 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, 8163282248 + 8163282249.

It is an arithmetic number, because the mean of its divisors is an integer number (8163282249).

Almost surely, 2^16326564497 is an apocalyptic number.

It is an amenable number.

16326564497 is a deficient number, since it is larger than the sum of its proper divisors (1).

16326564497 is an equidigital number, since it uses as much as digits as its factorization.

16326564497 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6531840, while the sum is 53.

The spelling of 16326564497 in words is "sixteen billion, three hundred twenty-six million, five hundred sixty-four thousand, four hundred ninety-seven".