216112675897216 has 128 divisors (see below), whose sum is σ = 494679889451520. Its totient is φ = 92123764992000.

The previous prime is 216112675897199. The next prime is 216112675897241. The reversal of 216112675897216 is 612798576211612.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (64).

It is a congruent number.

It is an unprimeable number.

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, 306107181 + ... + 306812371.

It is an arithmetic number, because the mean of its divisors is an integer number (3864686636340).

Almost surely, 2^{216112675897216} 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 216112675897216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (247339944725760).

216112675897216 is an abundant number, since it is smaller than the sum of its proper divisors (278567213554304).

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

216112675897216 is a wasteful number, since it uses less digits than its factorization.

216112675897216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 707044 (or 707032 counting only the distinct ones).

The product of its digits is 30481920, while the sum is 64.

The spelling of 216112675897216 in words is "two hundred sixteen trillion, one hundred twelve billion, six hundred seventy-five million, eight hundred ninety-seven thousand, two hundred sixteen".