12783747671 has 2 divisors, whose sum is σ = 12783747672. Its totient is φ = 12783747670.

The previous prime is 12783747653. The next prime is 12783747679. The reversal of 12783747671 is 17674738721.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12783747671 - 2¹⁸ = 12783485527 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12783747679) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6391873835 + 6391873836.

It is an arithmetic number, because the mean of its divisors is an integer number (6391873836).

Almost surely, 2^12783747671 is an apocalyptic number.

12783747671 is a deficient number, since it is larger than the sum of its proper divisors (1).

12783747671 is an equidigital number, since it uses as much as digits as its factorization.

12783747671 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2765952, while the sum is 53.

The spelling of 12783747671 in words is "twelve billion, seven hundred eighty-three million, seven hundred forty-seven thousand, six hundred seventy-one".