20330321329 has 2 divisors, whose sum is σ = 20330321330. Its totient is φ = 20330321328.

The previous prime is 20330321311. The next prime is 20330321399. The reversal of 20330321329 is 92312303302.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18944769600 + 1385551729 = 137640^2 + 37223^2 .

It is a cyclic number.

It is not a de Polignac number, because 20330321329 - 2⁹ = 20330320817 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20330321297 and 20330321306.

It is not a weakly prime, because it can be changed into another prime (20330321399) 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, 10165160664 + 10165160665.

It is an arithmetic number, because the mean of its divisors is an integer number (10165160665).

Almost surely, 2^20330321329 is an apocalyptic number.

It is an amenable number.

20330321329 is a deficient number, since it is larger than the sum of its proper divisors (1).

20330321329 is an equidigital number, since it uses as much as digits as its factorization.

20330321329 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5832, while the sum is 28.

The spelling of 20330321329 in words is "twenty billion, three hundred thirty million, three hundred twenty-one thousand, three hundred twenty-nine".