172195591271 has 8 divisors (see below), whose sum is σ = 189673521024. Its totient is φ = 155021625720.

The previous prime is 172195591247. The next prime is 172195591277.

172195591271 is nontrivially palindromic in base 10.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-172195591271 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 (172195591277) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 75989861 + ... + 75992126.

It is an arithmetic number, because the mean of its divisors is an integer number (23709190128).

Almost surely, 2^172195591271 is an apocalyptic number.

172195591271 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

172195591271 is a deficient number, since it is larger than the sum of its proper divisors (17477929753).

172195591271 is a wasteful number, since it uses less digits than its factorization.

172195591271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151982101.

The product of its digits is 396900, while the sum is 50.

The spelling of 172195591271 in words is "one hundred seventy-two billion, one hundred ninety-five million, five hundred ninety-one thousand, two hundred seventy-one".