20204320319 has 2 divisors, whose sum is σ = 20204320320. Its totient is φ = 20204320318.

The previous prime is 20204320289. The next prime is 20204320363. The reversal of 20204320319 is 91302340202.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20204320319 - 2¹⁶ = 20204254783 is a prime.

It is a super-2 number, since 2×20204320319² (a number of 21 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20204326319) 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, 10102160159 + 10102160160.

It is an arithmetic number, because the mean of its divisors is an integer number (10102160160).

Almost surely, 2^20204320319 is an apocalyptic number.

20204320319 is a deficient number, since it is larger than the sum of its proper divisors (1).

20204320319 is an equidigital number, since it uses as much as digits as its factorization.

20204320319 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 26.

The spelling of 20204320319 in words is "twenty billion, two hundred four million, three hundred twenty thousand, three hundred nineteen".