216118134617446 has 4 divisors (see below), whose sum is σ = 324177201926172. Its totient is φ = 108059067308722.

The previous prime is 216118134617401. The next prime is 216118134617447. The reversal of 216118134617446 is 644716431811612.

216118134617446 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a super-3 number, since 3×216118134617446³ (a number of 44 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216118134617447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54029533654360 + ... + 54029533654363.

It is an arithmetic number, because the mean of its divisors is an integer number (81044300481543).

Almost surely, 2^{216118134617446} is an apocalyptic number.

216118134617446 is a deficient number, since it is larger than the sum of its proper divisors (108059067308726).

216118134617446 is a wasteful number, since it uses less digits than its factorization.

216118134617446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108059067308725.

The product of its digits is 4644864, while the sum is 55.

The spelling of 216118134617446 in words is "two hundred sixteen trillion, one hundred eighteen billion, one hundred thirty-four million, six hundred seventeen thousand, four hundred forty-six".