6927116180861 has 2 divisors, whose sum is σ = 6927116180862. Its totient is φ = 6927116180860.

The previous prime is 6927116180857. The next prime is 6927116180921. The reversal of 6927116180861 is 1680816117296.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5490558121636 + 1436558059225 = 2343194^2 + 1198565^2 .

It is a cyclic number.

It is not a de Polignac number, because 6927116180861 - 2² = 6927116180857 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6927116180797 and 6927116180806.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6927116180561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3463558090430 + 3463558090431.

It is an arithmetic number, because the mean of its divisors is an integer number (3463558090431).

Almost surely, 2^{6927116180861} is an apocalyptic number.

It is an amenable number.

6927116180861 is a deficient number, since it is larger than the sum of its proper divisors (1).

6927116180861 is an equidigital number, since it uses as much as digits as its factorization.

6927116180861 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1741824, while the sum is 56.

The spelling of 6927116180861 in words is "six trillion, nine hundred twenty-seven billion, one hundred sixteen million, one hundred eighty thousand, eight hundred sixty-one".