171382709020 has 96 divisors (see below), whose sum is σ = 384001228800. Its totient is φ = 64062835200.

The previous prime is 171382709009. The next prime is 171382709041. The reversal of 171382709020 is 20907283171.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 44157480 + ... + 44161360.

It is an arithmetic number, because the mean of its divisors is an integer number (4000012800).

Almost surely, 2^171382709020 is an apocalyptic number.

171382709020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 171382709020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (192000614400).

171382709020 is an abundant number, since it is smaller than the sum of its proper divisors (212618519780).

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

171382709020 is a wasteful number, since it uses less digits than its factorization.

171382709020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5459 (or 5457 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 40.

The spelling of 171382709020 in words is "one hundred seventy-one billion, three hundred eighty-two million, seven hundred nine thousand, twenty".