216420440050 has 24 divisors (see below), whose sum is σ = 420043847616. Its totient is φ = 82804341840.

The previous prime is 216420439969. The next prime is 216420440051. The reversal of 216420440050 is 50044024612.

216420440050 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (216420440051) 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, 94094694 + ... + 94096993.

It is an arithmetic number, because the mean of its divisors is an integer number (17501826984).

Almost surely, 2^216420440050 is an apocalyptic number.

216420440050 is a deficient number, since it is larger than the sum of its proper divisors (203623407566).

216420440050 is a wasteful number, since it uses less digits than its factorization.

216420440050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188191722 (or 188191717 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 28.

Adding to 216420440050 its reverse (50044024612), we get a palindrome (266464464662).

The spelling of 216420440050 in words is "two hundred sixteen billion, four hundred twenty million, four hundred forty thousand, fifty".