171115012216 has 8 divisors (see below), whose sum is σ = 320840647920. Its totient is φ = 85557506104.

The previous prime is 171115012129. The next prime is 171115012219. The reversal of 171115012216 is 612210511171.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (171115012219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10694688256 + ... + 10694688271.

It is an arithmetic number, because the mean of its divisors is an integer number (40105080990).

Almost surely, 2^171115012216 is an apocalyptic number.

It is an amenable number.

171115012216 is a deficient number, since it is larger than the sum of its proper divisors (149725635704).

171115012216 is a wasteful number, since it uses less digits than its factorization.

171115012216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21389376533 (or 21389376529 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 28.

Adding to 171115012216 its reverse (612210511171), we get a palindrome (783325523387).

The spelling of 171115012216 in words is "one hundred seventy-one billion, one hundred fifteen million, twelve thousand, two hundred sixteen".