171217121360 has 160 divisors (see below), whose sum is σ = 430486911360. Its totient is φ = 63120605184.

The previous prime is 171217121359. The next prime is 171217121399. The reversal of 171217121360 is 63121712171.

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, 16792424 + ... + 16802616.

It is an arithmetic number, because the mean of its divisors is an integer number (2690543196).

Almost surely, 2^171217121360 is an apocalyptic number.

171217121360 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 171217121360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (215243455680).

171217121360 is an abundant number, since it is smaller than the sum of its proper divisors (259269790000).

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

171217121360 is a wasteful number, since it uses less digits than its factorization.

171217121360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10525 (or 10519 counting only the distinct ones).

The product of its (nonzero) digits is 3528, while the sum is 32.

The spelling of 171217121360 in words is "one hundred seventy-one billion, two hundred seventeen million, one hundred twenty-one thousand, three hundred sixty".