171703139085 has 12 divisors (see below), whose sum is σ = 297618774492. Its totient is φ = 91575007488.

The previous prime is 171703139063. The next prime is 171703139117. The reversal of 171703139085 is 580931307171.

171703139085 is a `hidden beast` number, since 1 + 7 + 170 + 313 + 90 + 85 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 108111412809 + 63591726276 = 328803^2 + 252174^2 .

It is not a de Polignac number, because 171703139085 - 2⁵ = 171703139053 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 3815625313 = 171703139085 / (1 + 7 + 1 + 7 + 0 + 3 + 1 + 3 + 9 + 0 + 8 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 171703139085.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1907812612 + ... + 1907812701.

It is an arithmetic number, because the mean of its divisors is an integer number (24801564541).

Almost surely, 2^171703139085 is an apocalyptic number.

171703139085 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

171703139085 is a deficient number, since it is larger than the sum of its proper divisors (125915635407).

171703139085 is a wasteful number, since it uses less digits than its factorization.

171703139085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3815625324 (or 3815625321 counting only the distinct ones).

The product of its (nonzero) digits is 158760, while the sum is 45.

The spelling of 171703139085 in words is "one hundred seventy-one billion, seven hundred three million, one hundred thirty-nine thousand, eighty-five".