12626779807 has 2 divisors, whose sum is σ = 12626779808. Its totient is φ = 12626779806.

The previous prime is 12626779769. The next prime is 12626779831. The reversal of 12626779807 is 70897762621.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12626779807 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12626779007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6313389903 + 6313389904.

It is an arithmetic number, because the mean of its divisors is an integer number (6313389904).

Almost surely, 2^12626779807 is an apocalyptic number.

12626779807 is a deficient number, since it is larger than the sum of its proper divisors (1).

12626779807 is an equidigital number, since it uses as much as digits as its factorization.

12626779807 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 12626779807 in words is "twelve billion, six hundred twenty-six million, seven hundred seventy-nine thousand, eight hundred seven".