20032005613 has 2 divisors, whose sum is σ = 20032005614. Its totient is φ = 20032005612.

The previous prime is 20032005593. The next prime is 20032005647. The reversal of 20032005613 is 31650023002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10225658884 + 9806346729 = 101122^2 + 99027^2 .

It is a cyclic number.

It is not a de Polignac number, because 20032005613 - 2²¹ = 20029908461 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20032003613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10016002806 + 10016002807.

It is an arithmetic number, because the mean of its divisors is an integer number (10016002807).

Almost surely, 2^20032005613 is an apocalyptic number.

It is an amenable number.

20032005613 is a deficient number, since it is larger than the sum of its proper divisors (1).

20032005613 is an equidigital number, since it uses as much as digits as its factorization.

20032005613 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1080, while the sum is 22.

Adding to 20032005613 its reverse (31650023002), we get a palindrome (51682028615).

The spelling of 20032005613 in words is "twenty billion, thirty-two million, five thousand, six hundred thirteen".