6117616327681 has 2 divisors, whose sum is σ = 6117616327682. Its totient is φ = 6117616327680.

The previous prime is 6117616327663. The next prime is 6117616327709. The reversal of 6117616327681 is 1867236167116.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4409092846656 + 1708523481025 = 2099784^2 + 1307105^2 .

It is a cyclic number.

It is not a de Polignac number, because 6117616327681 - 2¹¹ = 6117616325633 is a prime.

It is a super-2 number, since 2×6117616327681² (a number of 26 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (6117616327181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3058808163840 + 3058808163841.

It is an arithmetic number, because the mean of its divisors is an integer number (3058808163841).

Almost surely, 2^{6117616327681} is an apocalyptic number.

It is an amenable number.

6117616327681 is a deficient number, since it is larger than the sum of its proper divisors (1).

6117616327681 is an equidigital number, since it uses as much as digits as its factorization.

6117616327681 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3048192, while the sum is 55.

The spelling of 6117616327681 in words is "six trillion, one hundred seventeen billion, six hundred sixteen million, three hundred twenty-seven thousand, six hundred eighty-one".