12127735876 has 81 divisors (see below), whose sum is σ = 23404937367. Its totient is φ = 5497489920.

The previous prime is 12127735871. The next prime is 12127735901. The reversal of 12127735876 is 67853772121.

It is a happy number.

The square root of 12127735876 is 110126.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 854392900 + 11273342976 = 29230^2 + 106176^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12127735871) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 153515605 + ... + 153515683.

Almost surely, 2^12127735876 is an apocalyptic number.

12127735876 is the 110126-th square number.

It is an amenable number.

12127735876 is a deficient number, since it is larger than the sum of its proper divisors (11277201491).

12127735876 is an equidigital number, since it uses as much as digits as its factorization.

12127735876 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 278 (or 139 counting only the distinct ones).

The product of its digits is 987840, while the sum is 49.

Multiplying 12127735876 by its sum of digits (49), we get a square (594259057924 = 770882²).

The spelling of 12127735876 in words is "twelve billion, one hundred twenty-seven million, seven hundred thirty-five thousand, eight hundred seventy-six".