20324123440529 has 2 divisors, whose sum is σ = 20324123440530. Its totient is φ = 20324123440528.

The previous prime is 20324123440469. The next prime is 20324123440597. The reversal of 20324123440529 is 92504432142302.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20204440654225 + 119682786304 = 4494935^2 + 345952^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20324123440529 is a prime.

It is not a weakly prime, because it can be changed into another prime (20324123940529) 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, 10162061720264 + 10162061720265.

It is an arithmetic number, because the mean of its divisors is an integer number (10162061720265).

Almost surely, 2^{20324123440529} is an apocalyptic number.

It is an amenable number.

20324123440529 is a deficient number, since it is larger than the sum of its proper divisors (1).

20324123440529 is an equidigital number, since it uses as much as digits as its factorization.

20324123440529 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 414720, while the sum is 41.

The spelling of 20324123440529 in words is "twenty trillion, three hundred twenty-four billion, one hundred twenty-three million, four hundred forty thousand, five hundred twenty-nine".