12187542712699 has 4 divisors (see below), whose sum is σ = 12230608234936. Its totient is φ = 12144477190464.

The previous prime is 12187542712673. The next prime is 12187542712843. The reversal of 12187542712699 is 99621724578121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12187542712699 - 2²⁵ = 12187509158267 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12187542712699.

It is not an unprimeable number, because it can be changed into a prime (12187542710699) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21532760694 + ... + 21532761259.

It is an arithmetic number, because the mean of its divisors is an integer number (3057652058734).

Almost surely, 2^{12187542712699} is an apocalyptic number.

12187542712699 is a deficient number, since it is larger than the sum of its proper divisors (43065522237).

12187542712699 is an equidigital number, since it uses as much as digits as its factorization.

12187542712699 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43065522236.

The product of its digits is 30481920, while the sum is 64.

The spelling of 12187542712699 in words is "twelve trillion, one hundred eighty-seven billion, five hundred forty-two million, seven hundred twelve thousand, six hundred ninety-nine".