172197813597 has 8 divisors (see below), whose sum is σ = 233360971680. Its totient is φ = 112916598960.

The previous prime is 172197813479. The next prime is 172197813629. The reversal of 172197813597 is 795318791271.

172197813597 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 172197813597 - 2²⁰ = 172196765021 is a prime.

It is a Smith number, since the sum of its digits (60) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 172197813597.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172197814597) 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, 470485647 + ... + 470486012.

It is an arithmetic number, because the mean of its divisors is an integer number (29170121460).

Almost surely, 2^172197813597 is an apocalyptic number.

It is an amenable number.

172197813597 is a deficient number, since it is larger than the sum of its proper divisors (61163158083).

172197813597 is an equidigital number, since it uses as much as digits as its factorization.

172197813597 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 940971723.

The product of its digits is 6667920, while the sum is 60.

The spelling of 172197813597 in words is "one hundred seventy-two billion, one hundred ninety-seven million, eight hundred thirteen thousand, five hundred ninety-seven".