16066446531 has 32 divisors (see below), whose sum is σ = 22761308160. Its totient is φ = 10052120736.

The previous prime is 16066446521. The next prime is 16066446533. The reversal of 16066446531 is 13564466061.

16066446531 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 16066446531 - 2⁵ = 16066446499 is a prime.

It is a super-2 number, since 2×16066446531² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (16066446533) 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 31 ways as a sum of consecutive naturals, for example, 6564550 + ... + 6566996.

It is an arithmetic number, because the mean of its divisors is an integer number (711290880).

Almost surely, 2^16066446531 is an apocalyptic number.

16066446531 is a deficient number, since it is larger than the sum of its proper divisors (6694861629).

16066446531 is a wasteful number, since it uses less digits than its factorization.

16066446531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3503.

The product of its (nonzero) digits is 311040, while the sum is 42.

The spelling of 16066446531 in words is "sixteen billion, sixty-six million, four hundred forty-six thousand, five hundred thirty-one".