20003057717 has 2 divisors, whose sum is σ = 20003057718. Its totient is φ = 20003057716.

The previous prime is 20003057681. The next prime is 20003057759. The reversal of 20003057717 is 71775030002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19973038276 + 30019441 = 141326^2 + 5479^2 .

It is a cyclic number.

It is not a de Polignac number, because 20003057717 - 2⁶ = 20003057653 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20003057797) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10001528858 + 10001528859.

It is an arithmetic number, because the mean of its divisors is an integer number (10001528859).

Almost surely, 2^20003057717 is an apocalyptic number.

It is an amenable number.

20003057717 is a deficient number, since it is larger than the sum of its proper divisors (1).

20003057717 is an equidigital number, since it uses as much as digits as its factorization.

20003057717 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10290, while the sum is 32.

Adding to 20003057717 its reverse (71775030002), we get a palindrome (91778087719).

The spelling of 20003057717 in words is "twenty billion, three million, fifty-seven thousand, seven hundred seventeen".