12117026687 has 2 divisors, whose sum is σ = 12117026688. Its totient is φ = 12117026686.

The previous prime is 12117026671. The next prime is 12117026707. The reversal of 12117026687 is 78662071121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12117026687 - 2⁴ = 12117026671 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12117026627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6058513343 + 6058513344.

It is an arithmetic number, because the mean of its divisors is an integer number (6058513344).

Almost surely, 2^12117026687 is an apocalyptic number.

12117026687 is a deficient number, since it is larger than the sum of its proper divisors (1).

12117026687 is an equidigital number, since it uses as much as digits as its factorization.

12117026687 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 56448, while the sum is 41.

The spelling of 12117026687 in words is "twelve billion, one hundred seventeen million, twenty-six thousand, six hundred eighty-seven".