171121438080 has 128 divisors (see below), whose sum is σ = 606055154400. Its totient is φ = 45632378880.

The previous prime is 171121438039. The next prime is 171121438123. The reversal of 171121438080 is 80834121171.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

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, 4934151 + ... + 4968710.

Almost surely, 2^171121438080 is an apocalyptic number.

171121438080 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

171121438080 is an abundant number, since it is smaller than the sum of its proper divisors (434933716320).

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

171121438080 is an equidigital number, since it uses as much as digits as its factorization.

171121438080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9902889 (or 9902871 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 36.

The spelling of 171121438080 in words is "one hundred seventy-one billion, one hundred twenty-one million, four hundred thirty-eight thousand, eighty".