12711859961 has 2 divisors, whose sum is σ = 12711859962. Its totient is φ = 12711859960.

The previous prime is 12711859957. The next prime is 12711860003. The reversal of 12711859961 is 16995811721.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10470405625 + 2241454336 = 102325^2 + 47344^2 .

It is a cyclic number.

It is not a de Polignac number, because 12711859961 - 2² = 12711859957 is a prime.

It is not a weakly prime, because it can be changed into another prime (12711859861) 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, 6355929980 + 6355929981.

It is an arithmetic number, because the mean of its divisors is an integer number (6355929981).

Almost surely, 2^12711859961 is an apocalyptic number.

It is an amenable number.

12711859961 is a deficient number, since it is larger than the sum of its proper divisors (1).

12711859961 is an equidigital number, since it uses as much as digits as its factorization.

12711859961 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 272160, while the sum is 50.

The spelling of 12711859961 in words is "twelve billion, seven hundred eleven million, eight hundred fifty-nine thousand, nine hundred sixty-one".