12650865391 has 2 divisors, whose sum is σ = 12650865392. Its totient is φ = 12650865390.

The previous prime is 12650865341. The next prime is 12650865419. The reversal of 12650865391 is 19356805621.

It is a strong prime.

It is an emirp because it is prime and its reverse (19356805621) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12650865391 - 2¹⁷ = 12650734319 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12650865341) 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, 6325432695 + 6325432696.

It is an arithmetic number, because the mean of its divisors is an integer number (6325432696).

Almost surely, 2^12650865391 is an apocalyptic number.

12650865391 is a deficient number, since it is larger than the sum of its proper divisors (1).

12650865391 is an equidigital number, since it uses as much as digits as its factorization.

12650865391 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 388800, while the sum is 46.

The spelling of 12650865391 in words is "twelve billion, six hundred fifty million, eight hundred sixty-five thousand, three hundred ninety-one".