12784512757069 has 2 divisors, whose sum is σ = 12784512757070. Its totient is φ = 12784512757068.

The previous prime is 12784512757039. The next prime is 12784512757141. The reversal of 12784512757069 is 96075721548721.

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., 8794706254569 + 3989806502500 = 2965587^2 + 1997450^2 .

It is a cyclic number.

It is not a de Polignac number, because 12784512757069 - 2²⁷ = 12784378539341 is a prime.

It is a super-2 number, since 2×12784512757069² (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 12784512757069.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12784512757039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6392256378534 + 6392256378535.

It is an arithmetic number, because the mean of its divisors is an integer number (6392256378535).

Almost surely, 2^{12784512757069} is an apocalyptic number.

It is an amenable number.

12784512757069 is a deficient number, since it is larger than the sum of its proper divisors (1).

12784512757069 is an equidigital number, since it uses as much as digits as its factorization.

12784512757069 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 59270400, while the sum is 64.

The spelling of 12784512757069 in words is "twelve trillion, seven hundred eighty-four billion, five hundred twelve million, seven hundred fifty-seven thousand, sixty-nine".