197102955320897 has 4 divisors (see below), whose sum is σ = 197410448231556. Its totient is φ = 196795462410240.

The previous prime is 197102955320879. The next prime is 197102955320911. The reversal of 197102955320897 is 798023559201791.

It is a Cunningham number, because it is equal to 14039336²+1.

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 177914621879296 + 19188333441601 = 13338464^2 + 4380449^2 .

It is a cyclic number.

It is not a de Polignac number, because 197102955320897 - 2¹⁰ = 197102955319873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (197102955320807) 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 in 3 ways as a sum of consecutive naturals, for example, 153746454368 + ... + 153746455649.

It is an arithmetic number, because the mean of its divisors is an integer number (49352612057889).

Almost surely, 2^{197102955320897} is an apocalyptic number.

It is an amenable number.

197102955320897 is a deficient number, since it is larger than the sum of its proper divisors (307492910659).

197102955320897 is an equidigital number, since it uses as much as digits as its factorization.

197102955320897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 307492910658.

The product of its (nonzero) digits is 85730400, while the sum is 68.

The spelling of 197102955320897 in words is "one hundred ninety-seven trillion, one hundred two billion, nine hundred fifty-five million, three hundred twenty thousand, eight hundred ninety-seven".