216043109280 has 240 divisors, whose sum is σ = 763818196680. Its totient is φ = 57508282368.

The previous prime is 216043109263. The next prime is 216043109353. The reversal of 216043109280 is 82901340612.

216043109280 is a `hidden beast` number, since 2 + 1 + 60 + 4 + 310 + 9 + 280 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 157987170576 + 58055938704 = 397476^2 + 240948^2 .

It is a tau number, because it is divible by the number of its divisors (240).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

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 39 ways as a sum of consecutive naturals, for example, 7359592 + ... + 7388888.

Almost surely, 2^216043109280 is an apocalyptic number.

216043109280 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 216043109280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (381909098340).

216043109280 is an abundant number, since it is smaller than the sum of its proper divisors (547775087400).

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

216043109280 is a wasteful number, since it uses less digits than its factorization.

216043109280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29893 (or 29876 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

Adding to 216043109280 its reverse (82901340612), we get a palindrome (298944449892).

The spelling of 216043109280 in words is "two hundred sixteen billion, forty-three million, one hundred nine thousand, two hundred eighty".