12640122367 has 2 divisors, whose sum is σ = 12640122368. Its totient is φ = 12640122366.

The previous prime is 12640122361. The next prime is 12640122377. The reversal of 12640122367 is 76322104621.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12640122367 - 2⁷ = 12640122239 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12640122361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6320061183 + 6320061184.

It is an arithmetic number, because the mean of its divisors is an integer number (6320061184).

Almost surely, 2^12640122367 is an apocalyptic number.

12640122367 is a deficient number, since it is larger than the sum of its proper divisors (1).

12640122367 is an equidigital number, since it uses as much as digits as its factorization.

12640122367 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24192, while the sum is 34.

Adding to 12640122367 its reverse (76322104621), we get a palindrome (88962226988).

The spelling of 12640122367 in words is "twelve billion, six hundred forty million, one hundred twenty-two thousand, three hundred sixty-seven".