12657586663 has 2 divisors, whose sum is σ = 12657586664. Its totient is φ = 12657586662.

The previous prime is 12657586639. The next prime is 12657586717. The reversal of 12657586663 is 36668575621.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12657586663 - 2¹³ = 12657578471 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12657586363) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6328793331 + 6328793332.

It is an arithmetic number, because the mean of its divisors is an integer number (6328793332).

Almost surely, 2^12657586663 is an apocalyptic number.

12657586663 is a deficient number, since it is larger than the sum of its proper divisors (1).

12657586663 is an equidigital number, since it uses as much as digits as its factorization.

12657586663 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10886400, while the sum is 55.

The spelling of 12657586663 in words is "twelve billion, six hundred fifty-seven million, five hundred eighty-six thousand, six hundred sixty-three".