216500222839 has 4 divisors (see below), whose sum is σ = 216505475856. Its totient is φ = 216494969824.

The previous prime is 216500222819. The next prime is 216500222857. The reversal of 216500222839 is 938222005612.

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

It is a cyclic number.

It is not a de Polignac number, because 216500222839 - 2⁷ = 216500222711 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216500222819) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2564194 + ... + 2647279.

It is an arithmetic number, because the mean of its divisors is an integer number (54126368964).

Almost surely, 2^216500222839 is an apocalyptic number.

216500222839 is a deficient number, since it is larger than the sum of its proper divisors (5253017).

216500222839 is an equidigital number, since it uses as much as digits as its factorization.

216500222839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5253016.

The product of its (nonzero) digits is 103680, while the sum is 40.

The spelling of 216500222839 in words is "two hundred sixteen billion, five hundred million, two hundred twenty-two thousand, eight hundred thirty-nine".