12705771347771 has 2 divisors, whose sum is σ = 12705771347772. Its totient is φ = 12705771347770.

The previous prime is 12705771347663. The next prime is 12705771347861. The reversal of 12705771347771 is 17774317750721.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12705771347771 is a prime.

It is a super-2 number, since 2×12705771347771² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12705771347771.

It is not a weakly prime, because it can be changed into another prime (12705771047771) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6352885673885 + 6352885673886.

It is an arithmetic number, because the mean of its divisors is an integer number (6352885673886).

Almost surely, 2^{12705771347771} is an apocalyptic number.

12705771347771 is a deficient number, since it is larger than the sum of its proper divisors (1).

12705771347771 is an equidigital number, since it uses as much as digits as its factorization.

12705771347771 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14117880, while the sum is 59.

The spelling of 12705771347771 in words is "twelve trillion, seven hundred five billion, seven hundred seventy-one million, three hundred forty-seven thousand, seven hundred seventy-one".