197458247017 has 4 divisors (see below), whose sum is σ = 209073438036. Its totient is φ = 185843056000.

The previous prime is 197458247009. The next prime is 197458247047. The reversal of 197458247017 is 710742854791.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 126608584041 + 70849662976 = 355821^2 + 266176^2 .

It is a cyclic number.

It is not a de Polignac number, because 197458247017 - 2³ = 197458247009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (197458247047) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5807595484 + ... + 5807595517.

It is an arithmetic number, because the mean of its divisors is an integer number (52268359509).

Almost surely, 2^197458247017 is an apocalyptic number.

197458247017 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

197458247017 is a deficient number, since it is larger than the sum of its proper divisors (11615191019).

197458247017 is a wasteful number, since it uses less digits than its factorization.

197458247017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11615191018.

The product of its (nonzero) digits is 3951360, while the sum is 55.

The spelling of 197458247017 in words is "one hundred ninety-seven billion, four hundred fifty-eight million, two hundred forty-seven thousand, seventeen".