172665080566271 has 4 divisors (see below), whose sum is σ = 172665157107000. Its totient is φ = 172665004025544.

The previous prime is 172665080566267. The next prime is 172665080566289.

172665080566271 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 172665080566271 - 2² = 172665080566267 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 (172665080566201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34780496 + ... + 39433653.

It is an arithmetic number, because the mean of its divisors is an integer number (43166289276750).

Almost surely, 2^{172665080566271} is an apocalyptic number.

172665080566271 is a deficient number, since it is larger than the sum of its proper divisors (76540729).

172665080566271 is an equidigital number, since it uses as much as digits as its factorization.

172665080566271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76540728.

The product of its (nonzero) digits is 50803200, while the sum is 62.

The spelling of 172665080566271 in words is "one hundred seventy-two trillion, six hundred sixty-five billion, eighty million, five hundred sixty-six thousand, two hundred seventy-one".