197963317127 has 2 divisors, whose sum is σ = 197963317128. Its totient is φ = 197963317126.

The previous prime is 197963317099. The next prime is 197963317169. The reversal of 197963317127 is 721713369791.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-197963317127 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (197963317177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98981658563 + 98981658564.

It is an arithmetic number, because the mean of its divisors is an integer number (98981658564).

Almost surely, 2^197963317127 is an apocalyptic number.

197963317127 is a deficient number, since it is larger than the sum of its proper divisors (1).

197963317127 is an equidigital number, since it uses as much as digits as its factorization.

197963317127 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3000564, while the sum is 56.

The spelling of 197963317127 in words is "one hundred ninety-seven billion, nine hundred sixty-three million, three hundred seventeen thousand, one hundred twenty-seven".