216863745206 has 8 divisors (see below), whose sum is σ = 325826281344. Its totient is φ = 108254984760.

The previous prime is 216863745169. The next prime is 216863745227. The reversal of 216863745206 is 602547368612.

It is a happy number.

216863745206 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 congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 88442390 + ... + 88444841.

It is an arithmetic number, because the mean of its divisors is an integer number (40728285168).

Almost surely, 2^216863745206 is an apocalyptic number.

216863745206 is a deficient number, since it is larger than the sum of its proper divisors (108962536138).

216863745206 is a wasteful number, since it uses less digits than its factorization.

216863745206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176887846.

The product of its (nonzero) digits is 2903040, while the sum is 50.

The spelling of 216863745206 in words is "two hundred sixteen billion, eight hundred sixty-three million, seven hundred forty-five thousand, two hundred six".