216512321688422 has 8 divisors (see below), whose sum is σ = 335244885195072. Its totient is φ = 104764026623400.

The previous prime is 216512321688367. The next prime is 216512321688427. The reversal of 216512321688422 is 224886123215612.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216512321688427) 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, 1746067110329 + ... + 1746067110452.

It is an arithmetic number, because the mean of its divisors is an integer number (41905610649384).

Almost surely, 2^{216512321688422} is an apocalyptic number.

216512321688422 is a deficient number, since it is larger than the sum of its proper divisors (118732563506650).

216512321688422 is a wasteful number, since it uses less digits than its factorization.

216512321688422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3492134220814.

The product of its digits is 4423680, while the sum is 53.

The spelling of 216512321688422 in words is "two hundred sixteen trillion, five hundred twelve billion, three hundred twenty-one million, six hundred eighty-eight thousand, four hundred twenty-two".