197759923997197 has 2 divisors, whose sum is σ = 197759923997198. Its totient is φ = 197759923997196.

The previous prime is 197759923997149. The next prime is 197759923997203. The reversal of 197759923997197 is 791799329957791.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 100124458700841 + 97635465296356 = 10006221^2 + 9881066^2 .

It is a cyclic number.

It is not a de Polignac number, because 197759923997197 - 2¹⁵ = 197759923964429 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (197759923997137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98879961998598 + 98879961998599.

It is an arithmetic number, because the mean of its divisors is an integer number (98879961998599).

Almost surely, 2^{197759923997197} is an apocalyptic number.

It is an amenable number.

197759923997197 is a deficient number, since it is larger than the sum of its proper divisors (1).

197759923997197 is an equidigital number, since it uses as much as digits as its factorization.

197759923997197 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 38279695230, while the sum is 94.

The spelling of 197759923997197 in words is "one hundred ninety-seven trillion, seven hundred fifty-nine billion, nine hundred twenty-three million, nine hundred ninety-seven thousand, one hundred ninety-seven".