216242780016878 has 8 divisors (see below), whose sum is σ = 324370292457720. Its totient is φ = 108119349197640.

The previous prime is 216242780016869. The next prime is 216242780016931. The reversal of 216242780016878 is 878610087242612.

It is a happy number.

216242780016878 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 a self number, because there is not a number n which added to its sum of digits gives 216242780016878.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1020272948 + ... + 1020484871.

It is an arithmetic number, because the mean of its divisors is an integer number (40546286557215).

Almost surely, 2^{216242780016878} is an apocalyptic number.

216242780016878 is a deficient number, since it is larger than the sum of its proper divisors (108127512440842).

216242780016878 is a wasteful number, since it uses less digits than its factorization.

216242780016878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2040810802.

The product of its (nonzero) digits is 28901376, while the sum is 62.

The spelling of 216242780016878 in words is "two hundred sixteen trillion, two hundred forty-two billion, seven hundred eighty million, sixteen thousand, eight hundred seventy-eight".