197801275680397 has 8 divisors (see below), whose sum is σ = 211740883869600. Its totient is φ = 184214568964464.

The previous prime is 197801275680347. The next prime is 197801275680409. The reversal of 197801275680397 is 793086572108791.

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 197801275680397 - 2²⁷ = 197801141462669 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 (197801275680347) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 88225367158 + ... + 88225369399.

It is an arithmetic number, because the mean of its divisors is an integer number (26467610483700).

Almost surely, 2^{197801275680397} is an apocalyptic number.

It is an amenable number.

197801275680397 is a deficient number, since it is larger than the sum of its proper divisors (13939608189203).

197801275680397 is a wasteful number, since it uses less digits than its factorization.

197801275680397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176450736635.

The product of its (nonzero) digits is 320060160, while the sum is 73.

The spelling of 197801275680397 in words is "one hundred ninety-seven trillion, eight hundred one billion, two hundred seventy-five million, six hundred eighty thousand, three hundred ninety-seven".