16564043464232 has 72 divisors (see below), whose sum is σ = 36263894634030. Its totient is φ = 7086221683200.

The previous prime is 16564043464229. The next prime is 16564043464237. The reversal of 16564043464232 is 23246434046561.

It can be written as a sum of positive squares in 3 ways, for example, as 15988530056356 + 575513407876 = 3998566^2 + 758626^2 .

It is not an unprimeable number, because it can be changed into a prime (16564043464237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 29325119 + ... + 29884622.

Almost surely, 2^{16564043464232} is an apocalyptic number.

It is an amenable number.

16564043464232 is an abundant number, since it is smaller than the sum of its proper divisors (19699851169798).

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

16564043464232 is a wasteful number, since it uses less digits than its factorization.

16564043464232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59209803 (or 59209771 counting only the distinct ones).

The product of its (nonzero) digits is 9953280, while the sum is 50.

The spelling of 16564043464232 in words is "sixteen trillion, five hundred sixty-four billion, forty-three million, four hundred sixty-four thousand, two hundred thirty-two".