171085727020 has 72 divisors (see below), whose sum is σ = 401592885120. Its totient is φ = 61132331520.

The previous prime is 171085727009. The next prime is 171085727047. The reversal of 171085727020 is 20727580171.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 711625 + ... + 921184.

It is an arithmetic number, because the mean of its divisors is an integer number (5577678960).

Almost surely, 2^171085727020 is an apocalyptic number.

171085727020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

171085727020 is an abundant number, since it is smaller than the sum of its proper divisors (230507158100).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

171085727020 is a wasteful number, since it uses less digits than its factorization.

171085727020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1632875 (or 1632860 counting only the distinct ones).

The product of its (nonzero) digits is 54880, while the sum is 40.

The spelling of 171085727020 in words is "one hundred seventy-one billion, eighty-five million, seven hundred twenty-seven thousand, twenty".