171672387397 has 8 divisors (see below), whose sum is σ = 199898845056. Its totient is φ = 144371387472.

The previous prime is 171672387373. The next prime is 171672387431. The reversal of 171672387397 is 793783276171.

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

It is a cyclic number.

It is not a de Polignac number, because 171672387397 - 2²³ = 171663998789 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 (171672387797) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 231364033 + ... + 231364774.

It is an arithmetic number, because the mean of its divisors is an integer number (24987355632).

Almost surely, 2^171672387397 is an apocalyptic number.

It is an amenable number.

171672387397 is a deficient number, since it is larger than the sum of its proper divisors (28226457659).

171672387397 is an equidigital number, since it uses as much as digits as its factorization.

171672387397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 462728867.

The product of its digits is 18670176, while the sum is 61.

The spelling of 171672387397 in words is "one hundred seventy-one billion, six hundred seventy-two million, three hundred eighty-seven thousand, three hundred ninety-seven".