216316123650 has 144 divisors (see below), whose sum is σ = 637325065728. Its totient is φ = 52165488000.

The previous prime is 216316123613. The next prime is 216316123651. The reversal of 216316123650 is 56321613612.

216316123650 is a `hidden beast` number, since 2 + 1 + 6 + 3 + 1 + 612 + 36 + 5 + 0 = 666.

It is not an unprimeable number, because it can be changed into a prime (216316123651) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 831052 + ... + 1059848.

It is an arithmetic number, because the mean of its divisors is an integer number (4425868512).

Almost surely, 2^216316123650 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 216316123650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (318662532864).

216316123650 is an abundant number, since it is smaller than the sum of its proper divisors (421008942078).

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

216316123650 is a wasteful number, since it uses less digits than its factorization.

216316123650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229017 (or 229009 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 36.

The spelling of 216316123650 in words is "two hundred sixteen billion, three hundred sixteen million, one hundred twenty-three thousand, six hundred fifty".