12711611037161 has 2 divisors, whose sum is σ = 12711611037162. Its totient is φ = 12711611037160.

The previous prime is 12711611037113. The next prime is 12711611037253. The reversal of 12711611037161 is 16173011611721.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7959908611561 + 4751702425600 = 2821331^2 + 2179840^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12711611037161 is a prime.

It is not a weakly prime, because it can be changed into another prime (12711611027161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6355805518580 + 6355805518581.

It is an arithmetic number, because the mean of its divisors is an integer number (6355805518581).

Almost surely, 2^{12711611037161} is an apocalyptic number.

It is an amenable number.

12711611037161 is a deficient number, since it is larger than the sum of its proper divisors (1).

12711611037161 is an equidigital number, since it uses as much as digits as its factorization.

12711611037161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10584, while the sum is 38.

Adding to 12711611037161 its reverse (16173011611721), we get a palindrome (28884622648882).

The spelling of 12711611037161 in words is "twelve trillion, seven hundred eleven billion, six hundred eleven million, thirty-seven thousand, one hundred sixty-one".