171080939787 has 8 divisors (see below), whose sum is σ = 228913955904. Its totient is φ = 113650941768.

The previous prime is 171080939761. The next prime is 171080939807. The reversal of 171080939787 is 787939080171.

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

It is not a de Polignac number, because 171080939787 - 2⁶ = 171080939723 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 171080939787.

It is not an unprimeable number, because it can be changed into a prime (171080931787) 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, 100753533 + ... + 100755230.

It is an arithmetic number, because the mean of its divisors is an integer number (28614244488).

Almost surely, 2^171080939787 is an apocalyptic number.

171080939787 is a deficient number, since it is larger than the sum of its proper divisors (57833016117).

171080939787 is a wasteful number, since it uses less digits than its factorization.

171080939787 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201509049.

The product of its (nonzero) digits is 5334336, while the sum is 60.

The spelling of 171080939787 in words is "one hundred seventy-one billion, eighty million, nine hundred thirty-nine thousand, seven hundred eighty-seven".