20024240393 has 2 divisors, whose sum is σ = 20024240394. Its totient is φ = 20024240392.

The previous prime is 20024240389. The next prime is 20024240477. The reversal of 20024240393 is 39304242002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19978974409 + 45265984 = 141347^2 + 6728^2 .

It is a cyclic number.

It is not a de Polignac number, because 20024240393 - 2² = 20024240389 is a prime.

It is not a weakly prime, because it can be changed into another prime (20024240303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10012120196 + 10012120197.

It is an arithmetic number, because the mean of its divisors is an integer number (10012120197).

Almost surely, 2^20024240393 is an apocalyptic number.

It is an amenable number.

20024240393 is a deficient number, since it is larger than the sum of its proper divisors (1).

20024240393 is an equidigital number, since it uses as much as digits as its factorization.

20024240393 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10368, while the sum is 29.

Adding to 20024240393 its reverse (39304242002), we get a palindrome (59328482395).

The spelling of 20024240393 in words is "twenty billion, twenty-four million, two hundred forty thousand, three hundred ninety-three".