217071117160 has 32 divisors (see below), whose sum is σ = 514115805600. Its totient is φ = 82258528320.

The previous prime is 217071117149. The next prime is 217071117163. The reversal of 217071117160 is 61711170712.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (217071117163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 142809186 + ... + 142810705.

It is an arithmetic number, because the mean of its divisors is an integer number (16066118925).

Almost surely, 2^217071117160 is an apocalyptic number.

217071117160 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

217071117160 is an abundant number, since it is smaller than the sum of its proper divisors (297044688440).

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

217071117160 is a wasteful number, since it uses less digits than its factorization.

217071117160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285619921 (or 285619917 counting only the distinct ones).

The product of its (nonzero) digits is 4116, while the sum is 34.

Adding to 217071117160 its reverse (61711170712), we get a palindrome (278782287872).

The spelling of 217071117160 in words is "two hundred seventeen billion, seventy-one million, one hundred seventeen thousand, one hundred sixty".