20012320418117 has 2 divisors, whose sum is σ = 20012320418118. Its totient is φ = 20012320418116.

The previous prime is 20012320418099. The next prime is 20012320418141. The reversal of 20012320418117 is 71181402321002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19231855951396 + 780464466721 = 4385414^2 + 883439^2 .

It is a cyclic number.

It is not a de Polignac number, because 20012320418117 - 2⁴⁰ = 18912808790341 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20012320418417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10006160209058 + 10006160209059.

It is an arithmetic number, because the mean of its divisors is an integer number (10006160209059).

Almost surely, 2^{20012320418117} is an apocalyptic number.

It is an amenable number.

20012320418117 is a deficient number, since it is larger than the sum of its proper divisors (1).

20012320418117 is an equidigital number, since it uses as much as digits as its factorization.

20012320418117 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5376, while the sum is 32.

Adding to 20012320418117 its reverse (71181402321002), we get a palindrome (91193722739119).

The spelling of 20012320418117 in words is "twenty trillion, twelve billion, three hundred twenty million, four hundred eighteen thousand, one hundred seventeen".