216943290432 has 84 divisors (see below), whose sum is σ = 678358679856. Its totient is φ = 65740389120.

The previous prime is 216943290427. The next prime is 216943290433. The reversal of 216943290432 is 234092349612.

216943290432 is a `hidden beast` number, since 2 + 16 + 94 + 32 + 90 + 432 = 666.

It is not an unprimeable number, because it can be changed into a prime (216943290433) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17113558 + ... + 17126229.

Almost surely, 2^216943290432 is an apocalyptic number.

216943290432 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

216943290432 is an abundant number, since it is smaller than the sum of its proper divisors (461415389424).

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

216943290432 is a wasteful number, since it uses less digits than its factorization.

216943290432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34239816 (or 34239803 counting only the distinct ones).

The product of its (nonzero) digits is 559872, while the sum is 45.

The spelling of 216943290432 in words is "two hundred sixteen billion, nine hundred forty-three million, two hundred ninety thousand, four hundred thirty-two".