16506423564 has 96 divisors (see below), whose sum is σ = 41074387200. Its totient is φ = 5141348352.

The previous prime is 16506423541. The next prime is 16506423589. The reversal of 16506423564 is 46532460561.

16506423564 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 28119679 + ... + 28120265.

It is an arithmetic number, because the mean of its divisors is an integer number (427858200).

Almost surely, 2^16506423564 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16506423564, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20537193600).

16506423564 is an abundant number, since it is smaller than the sum of its proper divisors (24567963636).

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

16506423564 is a wasteful number, since it uses less digits than its factorization.

16506423564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1367 (or 1365 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 42.

The spelling of 16506423564 in words is "sixteen billion, five hundred six million, four hundred twenty-three thousand, five hundred sixty-four".