12537737197 has 2 divisors, whose sum is σ = 12537737198. Its totient is φ = 12537737196.

The previous prime is 12537737117. The next prime is 12537737203. The reversal of 12537737197 is 79173773521.

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., 9598904676 + 2938832521 = 97974^2 + 54211^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12537737197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12537737117) 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, 6268868598 + 6268868599.

It is an arithmetic number, because the mean of its divisors is an integer number (6268868599).

Almost surely, 2^12537737197 is an apocalyptic number.

It is an amenable number.

12537737197 is a deficient number, since it is larger than the sum of its proper divisors (1).

12537737197 is an equidigital number, since it uses as much as digits as its factorization.

12537737197 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1944810, while the sum is 52.

The spelling of 12537737197 in words is "twelve billion, five hundred thirty-seven million, seven hundred thirty-seven thousand, one hundred ninety-seven".