16506444432 has 20 divisors (see below), whose sum is σ = 42641648240. Its totient is φ = 5502148128.

The previous prime is 16506444413. The next prime is 16506444433. The reversal of 16506444432 is 23444460561.

It is not an unprimeable number, because it can be changed into a prime (16506444433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 171942082 + ... + 171942177.

It is an arithmetic number, because the mean of its divisors is an integer number (2132082412).

Almost surely, 2^16506444432 is an apocalyptic number.

16506444432 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

16506444432 is an abundant number, since it is smaller than the sum of its proper divisors (26135203808).

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

16506444432 is a wasteful number, since it uses less digits than its factorization.

16506444432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 343884270 (or 343884264 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 39.

The spelling of 16506444432 in words is "sixteen billion, five hundred six million, four hundred forty-four thousand, four hundred thirty-two".