20041321493 has 2 divisors, whose sum is σ = 20041321494. Its totient is φ = 20041321492.

The previous prime is 20041321483. The next prime is 20041321567. The reversal of 20041321493 is 39412314002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19959473284 + 81848209 = 141278^2 + 9047^2 .

It is a cyclic number.

It is not a de Polignac number, because 20041321493 - 2⁴ = 20041321477 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20041321483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10020660746 + 10020660747.

It is an arithmetic number, because the mean of its divisors is an integer number (10020660747).

Almost surely, 2^20041321493 is an apocalyptic number.

It is an amenable number.

20041321493 is a deficient number, since it is larger than the sum of its proper divisors (1).

20041321493 is an equidigital number, since it uses as much as digits as its factorization.

20041321493 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 29.

Adding to 20041321493 its reverse (39412314002), we get a palindrome (59453635495).

The spelling of 20041321493 in words is "twenty billion, forty-one million, three hundred twenty-one thousand, four hundred ninety-three".