20302020289 has 2 divisors, whose sum is σ = 20302020290. Its totient is φ = 20302020288.

The previous prime is 20302020281. The next prime is 20302020317. The reversal of 20302020289 is 98202020302.

It is an a-pointer prime, because the next prime (20302020317) can be obtained adding 20302020289 to its sum of digits (28).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20059906689 + 242113600 = 141633^2 + 15560^2 .

It is a cyclic number.

It is not a de Polignac number, because 20302020289 - 2³ = 20302020281 is a prime.

It is not a weakly prime, because it can be changed into another prime (20302020281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10151010144 + 10151010145.

It is an arithmetic number, because the mean of its divisors is an integer number (10151010145).

Almost surely, 2^20302020289 is an apocalyptic number.

It is an amenable number.

20302020289 is a deficient number, since it is larger than the sum of its proper divisors (1).

20302020289 is an equidigital number, since it uses as much as digits as its factorization.

20302020289 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 28.

The spelling of 20302020289 in words is "twenty billion, three hundred two million, twenty thousand, two hundred eighty-nine".