20013324403217 has 2 divisors, whose sum is σ = 20013324403218. Its totient is φ = 20013324403216.

The previous prime is 20013324403201. The next prime is 20013324403223. The reversal of 20013324403217 is 71230442331002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19987703919121 + 25620484096 = 4470761^2 + 160064^2 .

It is a cyclic number.

It is not a de Polignac number, because 20013324403217 - 2⁴ = 20013324403201 is a prime.

It is not a weakly prime, because it can be changed into another prime (20013324403297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10006662201608 + 10006662201609.

It is an arithmetic number, because the mean of its divisors is an integer number (10006662201609).

Almost surely, 2^{20013324403217} is an apocalyptic number.

It is an amenable number.

20013324403217 is a deficient number, since it is larger than the sum of its proper divisors (1).

20013324403217 is an equidigital number, since it uses as much as digits as its factorization.

20013324403217 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24192, while the sum is 32.

Adding to 20013324403217 its reverse (71230442331002), we get a palindrome (91243766734219).

The spelling of 20013324403217 in words is "twenty trillion, thirteen billion, three hundred twenty-four million, four hundred three thousand, two hundred seventeen".