20324123640349 has 2 divisors, whose sum is σ = 20324123640350. Its totient is φ = 20324123640348.

The previous prime is 20324123640281. The next prime is 20324123640361. The reversal of 20324123640349 is 94304632142302.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19655478902500 + 668644737849 = 4433450^2 + 817707^2 .

It is a cyclic number.

It is not a de Polignac number, because 20324123640349 - 2⁹ = 20324123639837 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20324123640449) 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, 10162061820174 + 10162061820175.

It is an arithmetic number, because the mean of its divisors is an integer number (10162061820175).

Almost surely, 2^{20324123640349} is an apocalyptic number.

It is an amenable number.

20324123640349 is a deficient number, since it is larger than the sum of its proper divisors (1).

20324123640349 is an equidigital number, since it uses as much as digits as its factorization.

20324123640349 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 746496, while the sum is 43.

The spelling of 20324123640349 in words is "twenty trillion, three hundred twenty-four billion, one hundred twenty-three million, six hundred forty thousand, three hundred forty-nine".