171321616120 has 16 divisors (see below), whose sum is σ = 385473636360. Its totient is φ = 68528646432.

The previous prime is 171321616117. The next prime is 171321616177. The reversal of 171321616120 is 21616123171.

It is a super-2 number, since 2×171321616120² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2141520162 + ... + 2141520241.

Almost surely, 2^171321616120 is an apocalyptic number.

171321616120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

171321616120 is an abundant number, since it is smaller than the sum of its proper divisors (214152020240).

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

171321616120 is a wasteful number, since it uses less digits than its factorization.

171321616120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4283040414 (or 4283040410 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 31.

Adding to 171321616120 its reverse (21616123171), we get a palindrome (192937739291).

The spelling of 171321616120 in words is "one hundred seventy-one billion, three hundred twenty-one million, six hundred sixteen thousand, one hundred twenty".