216896847078 has 16 divisors (see below), whose sum is σ = 439736074416. Its totient is φ = 71308552320.

The previous prime is 216896847061. The next prime is 216896847131. The reversal of 216896847078 is 870748698612.

It is a happy number.

216896847078 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 247598703 + ... + 247599578.

It is an arithmetic number, because the mean of its divisors is an integer number (27483504651).

Almost surely, 2^216896847078 is an apocalyptic number.

216896847078 is an abundant number, since it is smaller than the sum of its proper divisors (222839227338).

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

216896847078 is a wasteful number, since it uses less digits than its factorization.

216896847078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 495198359.

The product of its (nonzero) digits is 65028096, while the sum is 66.

The spelling of 216896847078 in words is "two hundred sixteen billion, eight hundred ninety-six million, eight hundred forty-seven thousand, seventy-eight".