12196511549 has 2 divisors, whose sum is σ = 12196511550. Its totient is φ = 12196511548.

The previous prime is 12196511543. The next prime is 12196511557. The reversal of 12196511549 is 94511569121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6233892025 + 5962619524 = 78955^2 + 77218^2 .

It is a cyclic number.

It is not a de Polignac number, because 12196511549 - 2⁴ = 12196511533 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12196511543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6098255774 + 6098255775.

It is an arithmetic number, because the mean of its divisors is an integer number (6098255775).

Almost surely, 2^12196511549 is an apocalyptic number.

It is an amenable number.

12196511549 is a deficient number, since it is larger than the sum of its proper divisors (1).

12196511549 is an equidigital number, since it uses as much as digits as its factorization.

12196511549 is an evil number, because the sum of its binary digits is even.

The product of its digits is 97200, while the sum is 44.

The spelling of 12196511549 in words is "twelve billion, one hundred ninety-six million, five hundred eleven thousand, five hundred forty-nine".