216111167999 has 4 divisors (see below), whose sum is σ = 228823589664. Its totient is φ = 203398746336.

The previous prime is 216111167959. The next prime is 216111168011. The reversal of 216111167999 is 999761111612.

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 216111167999 - 2³² = 211816200703 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 216111167999.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216111167929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6356210807 + ... + 6356210840.

It is an arithmetic number, because the mean of its divisors is an integer number (57205897416).

Almost surely, 2^216111167999 is an apocalyptic number.

216111167999 is a deficient number, since it is larger than the sum of its proper divisors (12712421665).

216111167999 is a wasteful number, since it uses less digits than its factorization.

216111167999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12712421664.

The product of its digits is 367416, while the sum is 53.

The spelling of 216111167999 in words is "two hundred sixteen billion, one hundred eleven million, one hundred sixty-seven thousand, nine hundred ninety-nine".