12586636197 has 8 divisors (see below), whose sum is σ = 18646868480. Its totient is φ = 8391090780.

The previous prime is 12586636187. The next prime is 12586636247. The reversal of 12586636197 is 79163668521.

12586636197 is a `hidden beast` number, since 12 + 5 + 8 + 6 + 6 + 3 + 619 + 7 = 666.

It is not a de Polignac number, because 12586636197 - 2⁶ = 12586636133 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12586636157) 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 in 7 ways as a sum of consecutive naturals, for example, 233085829 + ... + 233085882.

It is an arithmetic number, because the mean of its divisors is an integer number (2330858560).

Almost surely, 2^12586636197 is an apocalyptic number.

It is an amenable number.

12586636197 is a deficient number, since it is larger than the sum of its proper divisors (6060232283).

12586636197 is an equidigital number, since it uses as much as digits as its factorization.

12586636197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 466171720 (or 466171714 counting only the distinct ones).

The product of its digits is 3265920, while the sum is 54.

The spelling of 12586636197 in words is "twelve billion, five hundred eighty-six million, six hundred thirty-six thousand, one hundred ninety-seven".