20322315917 has 2 divisors, whose sum is σ = 20322315918. Its totient is φ = 20322315916.

The previous prime is 20322315913. The next prime is 20322315931. The reversal of 20322315917 is 71951322302.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19961733796 + 360582121 = 141286^2 + 18989^2 .

It is a cyclic number.

It is not a de Polignac number, because 20322315917 - 2² = 20322315913 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20322315913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10161157958 + 10161157959.

It is an arithmetic number, because the mean of its divisors is an integer number (10161157959).

Almost surely, 2^20322315917 is an apocalyptic number.

It is an amenable number.

20322315917 is a deficient number, since it is larger than the sum of its proper divisors (1).

20322315917 is an equidigital number, since it uses as much as digits as its factorization.

20322315917 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 22680, while the sum is 35.

The spelling of 20322315917 in words is "twenty billion, three hundred twenty-two million, three hundred fifteen thousand, nine hundred seventeen".