12718784650069 has 2 divisors, whose sum is σ = 12718784650070. Its totient is φ = 12718784650068.

The previous prime is 12718784649937. The next prime is 12718784650097. The reversal of 12718784650069 is 96005648781721.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8169364404100 + 4549420245969 = 2858210^2 + 2132937^2 .

It is a cyclic number.

It is not a de Polignac number, because 12718784650069 - 2²⁹ = 12718247779157 is a prime.

It is a super-2 number, since 2×12718784650069² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12718784150069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6359392325034 + 6359392325035.

It is an arithmetic number, because the mean of its divisors is an integer number (6359392325035).

Almost surely, 2^{12718784650069} is an apocalyptic number.

It is an amenable number.

12718784650069 is a deficient number, since it is larger than the sum of its proper divisors (1).

12718784650069 is an equidigital number, since it uses as much as digits as its factorization.

12718784650069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40642560, while the sum is 64.

The spelling of 12718784650069 in words is "twelve trillion, seven hundred eighteen billion, seven hundred eighty-four million, six hundred fifty thousand, sixty-nine".