12186606681 has 16 divisors (see below), whose sum is σ = 18058035520. Its totient is φ = 8122692960.

The previous prime is 12186606661. The next prime is 12186606697. The reversal of 12186606681 is 18660668121.

12186606681 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12186606681 - 2¹⁰ = 12186605657 is a prime.

It is a super-2 number, since 2×12186606681² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12186606661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 90261 + ... + 180333.

It is an arithmetic number, because the mean of its divisors is an integer number (1128627220).

Almost surely, 2^12186606681 is an apocalyptic number.

It is an amenable number.

12186606681 is a deficient number, since it is larger than the sum of its proper divisors (5871428839).

12186606681 is an equidigital number, since it uses as much as digits as its factorization.

12186606681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95093 (or 95087 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 45.

The spelling of 12186606681 in words is "twelve billion, one hundred eighty-six million, six hundred six thousand, six hundred eighty-one".