20352321332309 has 2 divisors, whose sum is σ = 20352321332310. Its totient is φ = 20352321332308.

The previous prime is 20352321332267. The next prime is 20352321332389. The reversal of 20352321332309 is 90323312325302.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18619354450225 + 1732966882084 = 4315015^2 + 1316422^2 .

It is a cyclic number.

It is not a de Polignac number, because 20352321332309 - 2³² = 20348026365013 is a prime.

It is a super-3 number, since 3×20352321332309³ (a number of 41 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20352321332389) 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, 10176160666154 + 10176160666155.

It is an arithmetic number, because the mean of its divisors is an integer number (10176160666155).

Almost surely, 2^{20352321332309} is an apocalyptic number.

It is an amenable number.

20352321332309 is a deficient number, since it is larger than the sum of its proper divisors (1).

20352321332309 is an equidigital number, since it uses as much as digits as its factorization.

20352321332309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 174960, while the sum is 38.

The spelling of 20352321332309 in words is "twenty trillion, three hundred fifty-two billion, three hundred twenty-one million, three hundred thirty-two thousand, three hundred nine".