12198865047497 has 2 divisors, whose sum is σ = 12198865047498. Its totient is φ = 12198865047496.

The previous prime is 12198865047403. The next prime is 12198865047511. The reversal of 12198865047497 is 79474056889121.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6828077337481 + 5370787710016 = 2613059^2 + 2317496^2 .

It is a cyclic number.

It is not a de Polignac number, because 12198865047497 - 2⁸ = 12198865047241 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12198865047497.

It is not a weakly prime, because it can be changed into another prime (12198865037497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6099432523748 + 6099432523749.

It is an arithmetic number, because the mean of its divisors is an integer number (6099432523749).

Almost surely, 2^{12198865047497} is an apocalyptic number.

It is an amenable number.

12198865047497 is a deficient number, since it is larger than the sum of its proper divisors (1).

12198865047497 is an equidigital number, since it uses as much as digits as its factorization.

12198865047497 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 243855360, while the sum is 71.

The spelling of 12198865047497 in words is "twelve trillion, one hundred ninety-eight billion, eight hundred sixty-five million, forty-seven thousand, four hundred ninety-seven".