197024663009 has 2 divisors, whose sum is σ = 197024663010. Its totient is φ = 197024663008.

The previous prime is 197024662997. The next prime is 197024663047. The reversal of 197024663009 is 900366420791.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 181531384225 + 15493278784 = 426065^2 + 124472^2 .

It is a cyclic number.

It is not a de Polignac number, because 197024663009 - 2⁴ = 197024662993 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (197024663909) 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, 98512331504 + 98512331505.

It is an arithmetic number, because the mean of its divisors is an integer number (98512331505).

Almost surely, 2^197024663009 is an apocalyptic number.

It is an amenable number.

197024663009 is a deficient number, since it is larger than the sum of its proper divisors (1).

197024663009 is an equidigital number, since it uses as much as digits as its factorization.

197024663009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 489888, while the sum is 47.

The spelling of 197024663009 in words is "one hundred ninety-seven billion, twenty-four million, six hundred sixty-three thousand, nine".