20334340909 has 2 divisors, whose sum is σ = 20334340910. Its totient is φ = 20334340908.

The previous prime is 20334340891. The next prime is 20334340913. The reversal of 20334340909 is 90904343302.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14400720009 + 5933620900 = 120003^2 + 77030^2 .

It is a cyclic number.

It is not a de Polignac number, because 20334340909 - 2¹¹ = 20334338861 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20334340979) 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, 10167170454 + 10167170455.

It is an arithmetic number, because the mean of its divisors is an integer number (10167170455).

Almost surely, 2^20334340909 is an apocalyptic number.

It is an amenable number.

20334340909 is a deficient number, since it is larger than the sum of its proper divisors (1).

20334340909 is an equidigital number, since it uses as much as digits as its factorization.

20334340909 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 69984, while the sum is 37.

The spelling of 20334340909 in words is "twenty billion, three hundred thirty-four million, three hundred forty thousand, nine hundred nine".