12127747573 has 2 divisors, whose sum is σ = 12127747574. Its totient is φ = 12127747572.

The previous prime is 12127747531. The next prime is 12127747591. The reversal of 12127747573 is 37574772121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6491041489 + 5636706084 = 80567^2 + 75078^2 .

It is a cyclic number.

It is not a de Polignac number, because 12127747573 - 2⁹ = 12127747061 is a prime.

It is a super-2 number, since 2×12127747573² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12127747523) 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 as a sum of consecutive naturals, namely, 6063873786 + 6063873787.

It is an arithmetic number, because the mean of its divisors is an integer number (6063873787).

Almost surely, 2^12127747573 is an apocalyptic number.

It is an amenable number.

12127747573 is a deficient number, since it is larger than the sum of its proper divisors (1).

12127747573 is an equidigital number, since it uses as much as digits as its factorization.

12127747573 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 576240, while the sum is 46.

The spelling of 12127747573 in words is "twelve billion, one hundred twenty-seven million, seven hundred forty-seven thousand, five hundred seventy-three".