20320304369 has 2 divisors, whose sum is σ = 20320304370. Its totient is φ = 20320304368.

The previous prime is 20320304353. The next prime is 20320304423. The reversal of 20320304369 is 96340302302.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15999214144 + 4321090225 = 126488^2 + 65735^2 .

It is a cyclic number.

It is not a de Polignac number, because 20320304369 - 2⁴ = 20320304353 is a prime.

It is a super-2 number, since 2×20320304369² (a number of 21 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (20320304869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10160152184 + 10160152185.

It is an arithmetic number, because the mean of its divisors is an integer number (10160152185).

Almost surely, 2^20320304369 is an apocalyptic number.

It is an amenable number.

20320304369 is a deficient number, since it is larger than the sum of its proper divisors (1).

20320304369 is an equidigital number, since it uses as much as digits as its factorization.

20320304369 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23328, while the sum is 32.

The spelling of 20320304369 in words is "twenty billion, three hundred twenty million, three hundred four thousand, three hundred sixty-nine".