12667278907 has 2 divisors, whose sum is σ = 12667278908. Its totient is φ = 12667278906.

The previous prime is 12667278881. The next prime is 12667278919. The reversal of 12667278907 is 70987276621.

It is a strong prime.

It is an emirp because it is prime and its reverse (70987276621) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12667278907 is a prime.

It is a super-2 number, since 2×12667278907² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12667278607) 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, 6333639453 + 6333639454.

It is an arithmetic number, because the mean of its divisors is an integer number (6333639454).

Almost surely, 2^12667278907 is an apocalyptic number.

12667278907 is a deficient number, since it is larger than the sum of its proper divisors (1).

12667278907 is an equidigital number, since it uses as much as digits as its factorization.

12667278907 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3556224, while the sum is 55.

The spelling of 12667278907 in words is "twelve billion, six hundred sixty-seven million, two hundred seventy-eight thousand, nine hundred seven".