20204020013 has 2 divisors, whose sum is σ = 20204020014. Its totient is φ = 20204020012.

The previous prime is 20204019967. The next prime is 20204020021. The reversal of 20204020013 is 31002040202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18301490089 + 1902529924 = 135283^2 + 43618^2 .

It is a cyclic number.

It is not a de Polignac number, because 20204020013 - 2⁸ = 20204019757 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20204020013.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20204020313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10102010006 + 10102010007.

It is an arithmetic number, because the mean of its divisors is an integer number (10102010007).

Almost surely, 2^20204020013 is an apocalyptic number.

It is an amenable number.

20204020013 is a deficient number, since it is larger than the sum of its proper divisors (1).

20204020013 is an equidigital number, since it uses as much as digits as its factorization.

20204020013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96, while the sum is 14.

Adding to 20204020013 its reverse (31002040202), we get a palindrome (51206060215).

The spelling of 20204020013 in words is "twenty billion, two hundred four million, twenty thousand, thirteen".