20324323109989 has 2 divisors, whose sum is σ = 20324323109990. Its totient is φ = 20324323109988.

The previous prime is 20324323109939. The next prime is 20324323110041. The reversal of 20324323109989 is 98990132342302.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16170186161089 + 4154136948900 = 4021217^2 + 2038170^2 .

It is a cyclic number.

It is not a de Polignac number, because 20324323109989 - 2¹¹ = 20324323107941 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20324323109939) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10162161554994 + 10162161554995.

It is an arithmetic number, because the mean of its divisors is an integer number (10162161554995).

Almost surely, 2^{20324323109989} is an apocalyptic number.

It is an amenable number.

20324323109989 is a deficient number, since it is larger than the sum of its proper divisors (1).

20324323109989 is an equidigital number, since it uses as much as digits as its factorization.

20324323109989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5038848, while the sum is 55.

The spelling of 20324323109989 in words is "twenty trillion, three hundred twenty-four billion, three hundred twenty-three million, one hundred nine thousand, nine hundred eighty-nine".