20342112289 has 2 divisors, whose sum is σ = 20342112290. Its totient is φ = 20342112288.

The previous prime is 20342112283. The next prime is 20342112319. The reversal of 20342112289 is 98221124302.

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., 20247867025 + 94245264 = 142295^2 + 9708^2 .

It is a cyclic number.

It is not a de Polignac number, because 20342112289 - 2³ = 20342112281 is a prime.

It is not a weakly prime, because it can be changed into another prime (20342112281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10171056144 + 10171056145.

It is an arithmetic number, because the mean of its divisors is an integer number (10171056145).

Almost surely, 2^20342112289 is an apocalyptic number.

It is an amenable number.

20342112289 is a deficient number, since it is larger than the sum of its proper divisors (1).

20342112289 is an equidigital number, since it uses as much as digits as its factorization.

20342112289 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13824, while the sum is 34.

The spelling of 20342112289 in words is "twenty billion, three hundred forty-two million, one hundred twelve thousand, two hundred eighty-nine".