20332029209 has 2 divisors, whose sum is σ = 20332029210. Its totient is φ = 20332029208.

The previous prime is 20332029161. The next prime is 20332029283. The reversal of 20332029209 is 90292023302.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19841539600 + 490489609 = 140860^2 + 22147^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20332029209 is a prime.

It is not a weakly prime, because it can be changed into another prime (20332029709) 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, 10166014604 + 10166014605.

It is an arithmetic number, because the mean of its divisors is an integer number (10166014605).

Almost surely, 2^20332029209 is an apocalyptic number.

It is an amenable number.

20332029209 is a deficient number, since it is larger than the sum of its proper divisors (1).

20332029209 is an equidigital number, since it uses as much as digits as its factorization.

20332029209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11664, while the sum is 32.

The spelling of 20332029209 in words is "twenty billion, three hundred thirty-two million, twenty-nine thousand, two hundred nine".