171080939785 has 16 divisors (see below), whose sum is σ = 235804320000. Its totient is φ = 116723128896.

The previous prime is 171080939761. The next prime is 171080939807. The reversal of 171080939785 is 587939080171.

It is a cyclic number.

It is not a de Polignac number, because 171080939785 - 2¹⁹ = 171080415497 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12274510 + ... + 12288439.

It is an arithmetic number, because the mean of its divisors is an integer number (14737770000).

Almost surely, 2^171080939785 is an apocalyptic number.

It is an amenable number.

171080939785 is a deficient number, since it is larger than the sum of its proper divisors (64723380215).

171080939785 is a wasteful number, since it uses less digits than its factorization.

171080939785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24563160.

The product of its (nonzero) digits is 3810240, while the sum is 58.

The spelling of 171080939785 in words is "one hundred seventy-one billion, eighty million, nine hundred thirty-nine thousand, seven hundred eighty-five".