12127747699 has 2 divisors, whose sum is σ = 12127747700. Its totient is φ = 12127747698.

The previous prime is 12127747663. The next prime is 12127747721. The reversal of 12127747699 is 99674772121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12127747699 - 2¹⁵ = 12127714931 is a prime.

It is not a weakly prime, because it can be changed into another prime (12127747199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6063873849 + 6063873850.

It is an arithmetic number, because the mean of its divisors is an integer number (6063873850).

Almost surely, 2^12127747699 is an apocalyptic number.

12127747699 is a deficient number, since it is larger than the sum of its proper divisors (1).

12127747699 is an equidigital number, since it uses as much as digits as its factorization.

12127747699 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2667168, while the sum is 55.

The spelling of 12127747699 in words is "twelve billion, one hundred twenty-seven million, seven hundred forty-seven thousand, six hundred ninety-nine".