16222768018 has 8 divisors (see below), whose sum is σ = 24334695612. Its totient is φ = 8111202816.

The previous prime is 16222768013. The next prime is 16222768033. The reversal of 16222768018 is 81086722261.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 16119603369 + 103164649 = 126963^2 + 10157^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (16222768013) 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, 111346 + ... + 211762.

Almost surely, 2^16222768018 is an apocalyptic number.

16222768018 is a deficient number, since it is larger than the sum of its proper divisors (8111927594).

16222768018 is a wasteful number, since it uses less digits than its factorization.

16222768018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181196.

The product of its (nonzero) digits is 129024, while the sum is 43.

The spelling of 16222768018 in words is "sixteen billion, two hundred twenty-two million, seven hundred sixty-eight thousand, eighteen".