171606140605 has 16 divisors (see below), whose sum is σ = 214633995264. Its totient is φ = 131566487040.

The previous prime is 171606140593. The next prime is 171606140611. The reversal of 171606140605 is 506041606171.

It is not a de Polignac number, because 171606140605 - 2¹³ = 171606132413 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 5358484 + ... + 5390413.

It is an arithmetic number, because the mean of its divisors is an integer number (13414624704).

Almost surely, 2^171606140605 is an apocalyptic number.

It is an amenable number.

171606140605 is a deficient number, since it is larger than the sum of its proper divisors (43027854659).

171606140605 is a wasteful number, since it uses less digits than its factorization.

171606140605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10749036.

The product of its (nonzero) digits is 30240, while the sum is 37.

Adding to 171606140605 its reverse (506041606171), we get a palindrome (677647746776).

The spelling of 171606140605 in words is "one hundred seventy-one billion, six hundred six million, one hundred forty thousand, six hundred five".