216304000000 has 308 divisors, whose sum is σ = 590104165320. Its totient is φ = 78592000000.

The previous prime is 216303999979. The next prime is 216304000001. The reversal of 216304000000 is 403612.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216304000001) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 175999386 + ... + 176000614.

Almost surely, 2^216304000000 is an apocalyptic number.

216304000000 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 216304000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (295052082660).

216304000000 is an abundant number, since it is smaller than the sum of its proper divisors (373800165320).

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

216304000000 is an frugal number, since it uses more digits than its factorization.

216304000000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1290 (or 1247 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 216304000000 its reverse (403612), we get a palindrome (216304403612).

The spelling of 216304000000 in words is "two hundred sixteen billion, three hundred four million", and thus it is an aban number.