16181984466 has 40 divisors (see below), whose sum is σ = 37836146304. Its totient is φ = 5159472120.

The previous prime is 16181984461. The next prime is 16181984473. The reversal of 16181984466 is 66448918161.

16181984466 is a `hidden beast` number, since 1 + 6 + 1 + 8 + 198 + 446 + 6 = 666.

16181984466 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (16181984461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 2167770 + ... + 2175221.

Almost surely, 2^16181984466 is an apocalyptic number.

16181984466 is an abundant number, since it is smaller than the sum of its proper divisors (21654161838).

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

16181984466 is a wasteful number, since it uses less digits than its factorization.

16181984466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4343028 (or 4343019 counting only the distinct ones).

The product of its digits is 1990656, while the sum is 54.

The spelling of 16181984466 in words is "sixteen billion, one hundred eighty-one million, nine hundred eighty-four thousand, four hundred sixty-six".