12816660071 has 2 divisors, whose sum is σ = 12816660072. Its totient is φ = 12816660070.

The previous prime is 12816660067. The next prime is 12816660133. The reversal of 12816660071 is 17006661821.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12816660071 - 2² = 12816660067 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12816668071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6408330035 + 6408330036.

It is an arithmetic number, because the mean of its divisors is an integer number (6408330036).

Almost surely, 2^12816660071 is an apocalyptic number.

12816660071 is a deficient number, since it is larger than the sum of its proper divisors (1).

12816660071 is an equidigital number, since it uses as much as digits as its factorization.

12816660071 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24192, while the sum is 38.

The spelling of 12816660071 in words is "twelve billion, eight hundred sixteen million, six hundred sixty thousand, seventy-one".