216584216704 has 32 divisors (see below), whose sum is σ = 432477584640. Its totient is φ = 108040823040.

The previous prime is 216584216701. The next prime is 216584216713. The reversal of 216584216704 is 407612485612.

It is a tau number, because it is divible by the number of its divisors (32).

It is not an unprimeable number, because it can be changed into a prime (216584216701) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1907784 + ... + 2018119.

It is an arithmetic number, because the mean of its divisors is an integer number (13514924520).

Almost surely, 2^216584216704 is an apocalyptic number.

It is an amenable number.

216584216704 is a deficient number, since it is larger than the sum of its proper divisors (215893367936).

216584216704 is an equidigital number, since it uses as much as digits as its factorization.

216584216704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3926348 (or 3926336 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 46.

The spelling of 216584216704 in words is "two hundred sixteen billion, five hundred eighty-four million, two hundred sixteen thousand, seven hundred four".