216747353328 has 40 divisors (see below), whose sum is σ = 610833451776. Its totient is φ = 65681016000.

The previous prime is 216747353297. The next prime is 216747353363. The reversal of 216747353328 is 823353747612.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 205252648 + ... + 205253703.

Almost surely, 2^216747353328 is an apocalyptic number.

It is an amenable number.

216747353328 is an abundant number, since it is smaller than the sum of its proper divisors (394086098448).

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

216747353328 is a wasteful number, since it uses less digits than its factorization.

216747353328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 410506373 (or 410506367 counting only the distinct ones).

The product of its digits is 5080320, while the sum is 51.

It can be divided in two parts, 216747 and 353328, that added together give a palindrome (570075).

The spelling of 216747353328 in words is "two hundred sixteen billion, seven hundred forty-seven million, three hundred fifty-three thousand, three hundred twenty-eight".