13020209989 has 2 divisors, whose sum is σ = 13020209990. Its totient is φ = 13020209988.

The previous prime is 13020209959. The next prime is 13020210013. The reversal of 13020209989 is 98990202031.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12920868900 + 99341089 = 113670^2 + 9967^2 .

It is a cyclic number.

It is not a de Polignac number, because 13020209989 - 2¹³ = 13020201797 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13020209959) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6510104994 + 6510104995.

It is an arithmetic number, because the mean of its divisors is an integer number (6510104995).

Almost surely, 2^13020209989 is an apocalyptic number.

It is an amenable number.

13020209989 is a deficient number, since it is larger than the sum of its proper divisors (1).

13020209989 is an equidigital number, since it uses as much as digits as its factorization.

13020209989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 69984, while the sum is 43.

The spelling of 13020209989 in words is "thirteen billion, twenty million, two hundred nine thousand, nine hundred eighty-nine".