216388733798244 has 48 divisors (see below), whose sum is σ = 577051155218048. Its totient is φ = 61823795539968.

The previous prime is 216388733798227. The next prime is 216388733798267. The reversal of 216388733798244 is 442897337883612.

It is a super-2 number, since 2×216388733798244² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29079517 + ... + 35754660.

Almost surely, 2^{216388733798244} is an apocalyptic number.

It is an amenable number.

216388733798244 is an abundant number, since it is smaller than the sum of its proper divisors (360662421419804).

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

216388733798244 is a wasteful number, since it uses less digits than its factorization.

216388733798244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64873924 (or 64873922 counting only the distinct ones).

The product of its digits is 2341011456, while the sum is 75.

The spelling of 216388733798244 in words is "two hundred sixteen trillion, three hundred eighty-eight billion, seven hundred thirty-three million, seven hundred ninety-eight thousand, two hundred forty-four".