20616116113 has 2 divisors, whose sum is σ = 20616116114. Its totient is φ = 20616116112.

The previous prime is 20616116069. The next prime is 20616116149. The reversal of 20616116113 is 31161161602.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12488733009 + 8127383104 = 111753^2 + 90152^2 .

It is a cyclic number.

It is not a de Polignac number, because 20616116113 - 2¹⁷ = 20615985041 is a prime.

It is not a weakly prime, because it can be changed into another prime (20616116813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10308058056 + 10308058057.

It is an arithmetic number, because the mean of its divisors is an integer number (10308058057).

Almost surely, 2^20616116113 is an apocalyptic number.

It is an amenable number.

20616116113 is a deficient number, since it is larger than the sum of its proper divisors (1).

20616116113 is an equidigital number, since it uses as much as digits as its factorization.

20616116113 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 28.

Adding to 20616116113 its reverse (31161161602), we get a palindrome (51777277715).

The spelling of 20616116113 in words is "twenty billion, six hundred sixteen million, one hundred sixteen thousand, one hundred thirteen".