12771872127 has 16 divisors (see below), whose sum is σ = 21624334080. Its totient is φ = 7298212536.

The previous prime is 12771872123. The next prime is 12771872129. The reversal of 12771872127 is 72127817721.

It is not a de Polignac number, because 12771872127 - 2² = 12771872123 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12771872123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33787833 + ... + 33788210.

It is an arithmetic number, because the mean of its divisors is an integer number (1351520880).

Almost surely, 2^12771872127 is an apocalyptic number.

12771872127 is a deficient number, since it is larger than the sum of its proper divisors (8852461953).

12771872127 is an equidigital number, since it uses as much as digits as its factorization.

12771872127 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67576059 (or 67576053 counting only the distinct ones).

The product of its digits is 153664, while the sum is 45.

The spelling of 12771872127 in words is "twelve billion, seven hundred seventy-one million, eight hundred seventy-two thousand, one hundred twenty-seven".