216366543200000 has 216 divisors, whose sum is σ = 568237229083440. Its totient is φ = 81991526400000.

The previous prime is 216366543199957. The next prime is 216366543200047. The reversal of 216366543200000 is 2345663612.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8082680 + ... + 22317320.

Almost surely, 2^{216366543200000} is an apocalyptic number.

216366543200000 is a gapful number since it is divisible by the number (20) 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 216366543200000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (284118614541720).

216366543200000 is an abundant number, since it is smaller than the sum of its proper divisors (351870685883440).

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

216366543200000 is an frugal number, since it uses more digits than its factorization.

216366543200000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14234701 (or 14234667 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 38.

Adding to 216366543200000 its reverse (2345663612), we get a palindrome (216368888863612).

The spelling of 216366543200000 in words is "two hundred sixteen trillion, three hundred sixty-six billion, five hundred forty-three million, two hundred thousand".