128175859197 has 12 divisors (see below), whose sum is σ = 186020365024. Its totient is φ = 85045592520.

The previous prime is 128175859183. The next prime is 128175859241. The reversal of 128175859197 is 791958571821.

128175859197 is a `hidden beast` number, since 1 + 28 + 17 + 5 + 8 + 591 + 9 + 7 = 666.

It is not a de Polignac number, because 128175859197 - 2¹⁹ = 128175334909 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 (128175859127) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 33746353 + ... + 33750150.

Almost surely, 2^128175859197 is an apocalyptic number.

It is an amenable number.

128175859197 is a deficient number, since it is larger than the sum of its proper divisors (57844505827).

128175859197 is a wasteful number, since it uses less digits than its factorization.

128175859197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67496720 (or 67496717 counting only the distinct ones).

The product of its digits is 12700800, while the sum is 63.

The spelling of 128175859197 in words is "one hundred twenty-eight billion, one hundred seventy-five million, eight hundred fifty-nine thousand, one hundred ninety-seven".