171212405160 has 128 divisors (see below), whose sum is σ = 532929196800. Its totient is φ = 43951165440.

The previous prime is 171212405129. The next prime is 171212405179. The reversal of 171212405160 is 61504212171.

It is a Harshad number since it is a multiple of its sum of digits (30).

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, 1099765 + ... + 1245755.

It is an arithmetic number, because the mean of its divisors is an integer number (4163509350).

Almost surely, 2^171212405160 is an apocalyptic number.

171212405160 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 171212405160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (266464598400).

171212405160 is an abundant number, since it is smaller than the sum of its proper divisors (361716791640).

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

171212405160 is a wasteful number, since it uses less digits than its factorization.

171212405160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146371 (or 146367 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 30.

The spelling of 171212405160 in words is "one hundred seventy-one billion, two hundred twelve million, four hundred five thousand, one hundred sixty".