12127812448727 has 4 divisors (see below), whose sum is σ = 12194816937576. Its totient is φ = 12060807959880.

The previous prime is 12127812448691. The next prime is 12127812448751. The reversal of 12127812448727 is 72784421872121.

It is a happy number.

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 12127812448727 - 2²⁰ = 12127811400151 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 (12127812441727) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33502244153 + ... + 33502244514.

It is an arithmetic number, because the mean of its divisors is an integer number (3048704234394).

Almost surely, 2^{12127812448727} is an apocalyptic number.

12127812448727 is a deficient number, since it is larger than the sum of its proper divisors (67004488849).

12127812448727 is an equidigital number, since it uses as much as digits as its factorization.

12127812448727 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67004488848.

The product of its digits is 5619712, while the sum is 56.

The spelling of 12127812448727 in words is "twelve trillion, one hundred twenty-seven billion, eight hundred twelve million, four hundred forty-eight thousand, seven hundred twenty-seven".