216661446483 has 8 divisors (see below), whose sum is σ = 288916406208. Its totient is φ = 144423725544.

The previous prime is 216661446433. The next prime is 216661446503. The reversal of 216661446483 is 384644166612.

216661446483 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 216661446483 - 2³³ = 208071511891 is a prime.

It is not an unprimeable number, because it can be changed into a prime (216661446433) 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 7 ways as a sum of consecutive naturals, for example, 4280341 + ... + 4330662.

It is an arithmetic number, because the mean of its divisors is an integer number (36114550776).

Almost surely, 2^216661446483 is an apocalyptic number.

216661446483 is a deficient number, since it is larger than the sum of its proper divisors (72254959725).

216661446483 is an equidigital number, since it uses as much as digits as its factorization.

216661446483 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8619393.

The product of its digits is 3981312, while the sum is 51.

The spelling of 216661446483 in words is "two hundred sixteen billion, six hundred sixty-one million, four hundred forty-six thousand, four hundred eighty-three".