12650865769 has 2 divisors, whose sum is σ = 12650865770. Its totient is φ = 12650865768.

The previous prime is 12650865683. The next prime is 12650865833. The reversal of 12650865769 is 96756805621.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12457238544 + 193627225 = 111612^2 + 13915^2 .

It is a cyclic number.

It is not a de Polignac number, because 12650865769 - 2¹⁷ = 12650734697 is a prime.

It is a super-2 number, since 2×12650865769² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12650895769) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6325432884 + 6325432885.

It is an arithmetic number, because the mean of its divisors is an integer number (6325432885).

Almost surely, 2^12650865769 is an apocalyptic number.

It is an amenable number.

12650865769 is a deficient number, since it is larger than the sum of its proper divisors (1).

12650865769 is an equidigital number, since it uses as much as digits as its factorization.

12650865769 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5443200, while the sum is 55.

The spelling of 12650865769 in words is "twelve billion, six hundred fifty million, eight hundred sixty-five thousand, seven hundred sixty-nine".