216642901384 has 64 divisors (see below), whose sum is σ = 500147706240. Its totient is φ = 85670161920.

The previous prime is 216642901361. The next prime is 216642901393. The reversal of 216642901384 is 483109246612.

216642901384 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1776267 + ... + 1894309.

It is an arithmetic number, because the mean of its divisors is an integer number (7814807910).

Almost surely, 2^216642901384 is an apocalyptic number.

It is an amenable number.

216642901384 is an abundant number, since it is smaller than the sum of its proper divisors (283504804856).

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

216642901384 is a wasteful number, since it uses less digits than its factorization.

216642901384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120590 (or 120586 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 46.

The spelling of 216642901384 in words is "two hundred sixteen billion, six hundred forty-two million, nine hundred one thousand, three hundred eighty-four".