172669966271 has 8 divisors (see below), whose sum is σ = 188591760000. Its totient is φ = 156785593240.

The previous prime is 172669966201. The next prime is 172669966277.

172669966271 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-172669966271 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 (172669966277) 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, 9345521 + ... + 9363978.

It is an arithmetic number, because the mean of its divisors is an integer number (23573970000).

Almost surely, 2^172669966271 is an apocalyptic number.

172669966271 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

172669966271 is a deficient number, since it is larger than the sum of its proper divisors (15921793729).

172669966271 is a wasteful number, since it uses less digits than its factorization.

172669966271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18710349.

The product of its digits is 20575296, while the sum is 62.

The spelling of 172669966271 in words is "one hundred seventy-two billion, six hundred sixty-nine million, nine hundred sixty-six thousand, two hundred seventy-one".