197040648317 has 8 divisors (see below), whose sum is σ = 197143577400. Its totient is φ = 196937754624.

The previous prime is 197040648313. The next prime is 197040648331. The reversal of 197040648317 is 713846040791.

197040648317 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 30506464921 + 166534183396 = 174661^2 + 408086^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 197040648317 - 2² = 197040648313 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (197040648313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27223223 + ... + 27230459.

It is an arithmetic number, because the mean of its divisors is an integer number (24642947175).

Almost surely, 2^197040648317 is an apocalyptic number.

It is an amenable number.

197040648317 is a deficient number, since it is larger than the sum of its proper divisors (102929083).

197040648317 is an equidigital number, since it uses as much as digits as its factorization.

197040648317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17695.

The product of its (nonzero) digits is 1016064, while the sum is 50.

The spelling of 197040648317 in words is "one hundred ninety-seven billion, forty million, six hundred forty-eight thousand, three hundred seventeen".