16826162209 has 2 divisors, whose sum is σ = 16826162210. Its totient is φ = 16826162208.

The previous prime is 16826162191. The next prime is 16826162219. The reversal of 16826162209 is 90226162861.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15451235809 + 1374926400 = 124303^2 + 37080^2 .

It is a cyclic number.

It is not a de Polignac number, because 16826162209 - 2⁷ = 16826162081 is a prime.

It is not a weakly prime, because it can be changed into another prime (16826162219) by changing a digit.

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 as a sum of consecutive naturals, namely, 8413081104 + 8413081105.

It is an arithmetic number, because the mean of its divisors is an integer number (8413081105).

Almost surely, 2^16826162209 is an apocalyptic number.

It is an amenable number.

16826162209 is a deficient number, since it is larger than the sum of its proper divisors (1).

16826162209 is an equidigital number, since it uses as much as digits as its factorization.

16826162209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 124416, while the sum is 43.

The spelling of 16826162209 in words is "sixteen billion, eight hundred twenty-six million, one hundred sixty-two thousand, two hundred nine".