16243815168 has 486 divisors, whose sum is σ = 57283837884. Its totient is φ = 4577513472.

The previous prime is 16243815151. The next prime is 16243815169. The reversal of 16243815168 is 86151834261.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

16243815168 is a `hidden beast` number, since 1 + 6 + 2 + 438 + 151 + 68 = 666.

It is a tau number, because it is divible by the number of its divisors (486).

It is not an unprimeable number, because it can be changed into a prime (16243815169) by changing a digit.

It is a polite number, since it can be written in 53 ways as a sum of consecutive naturals, for example, 222517980 + ... + 222518052.

Almost surely, 2^16243815168 is an apocalyptic number.

16243815168 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16243815168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28641918942).

16243815168 is an abundant number, since it is smaller than the sum of its proper divisors (41040022716).

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

16243815168 is an frugal number, since it uses more digits than its factorization.

16243815168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191 (or 85 counting only the distinct ones).

The product of its digits is 276480, while the sum is 45.

The spelling of 16243815168 in words is "sixteen billion, two hundred forty-three million, eight hundred fifteen thousand, one hundred sixty-eight".