216171702171616 has 96 divisors (see below), whose sum is σ = 442964982864096. Its totient is φ = 103761665280000.

The previous prime is 216171702171569. The next prime is 216171702171617. The reversal of 216171702171616 is 616171207171612.

It is a self number, because there is not a number n which added to its sum of digits gives 216171702171616.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216171702171617) 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 in 15 ways as a sum of consecutive naturals, for example, 108210946 + ... + 110190526.

It is an arithmetic number, because the mean of its divisors is an integer number (4614218571501).

Almost surely, 2^{216171702171616} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 216171702171616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (221482491432048).

216171702171616 is an abundant number, since it is smaller than the sum of its proper divisors (226793280692480).

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

216171702171616 is a wasteful number, since it uses less digits than its factorization.

216171702171616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1980996 (or 1980988 counting only the distinct ones).

The product of its (nonzero) digits is 296352, while the sum is 49.

The spelling of 216171702171616 in words is "two hundred sixteen trillion, one hundred seventy-one billion, seven hundred two million, one hundred seventy-one thousand, six hundred sixteen".