216668984546 has 64 divisors (see below), whose sum is σ = 381029806080. Its totient is φ = 90496224000.

The previous prime is 216668984527. The next prime is 216668984549. The reversal of 216668984546 is 645489866612.

216668984546 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×216668984546² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (216668984549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 31366025 + ... + 31372931.

It is an arithmetic number, because the mean of its divisors is an integer number (5953590720).

Almost surely, 2^216668984546 is an apocalyptic number.

216668984546 is a deficient number, since it is larger than the sum of its proper divisors (164360821534).

216668984546 is a wasteful number, since it uses less digits than its factorization.

216668984546 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7359.

The product of its digits is 119439360, while the sum is 65.

The spelling of 216668984546 in words is "two hundred sixteen billion, six hundred sixty-eight million, nine hundred eighty-four thousand, five hundred forty-six".