16066321919 has 32 divisors (see below), whose sum is σ = 17169408000. Its totient is φ = 15011884800.

The previous prime is 16066321913. The next prime is 16066321961. The reversal of 16066321919 is 91912366061.

It is a cyclic number.

It is not a de Polignac number, because 16066321919 - 2¹⁶ = 16066256383 is a prime.

It is a super-2 number, since 2×16066321919² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 16066321919.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16066321913) 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 31 ways as a sum of consecutive naturals, for example, 37276634 + ... + 37277064.

It is an arithmetic number, because the mean of its divisors is an integer number (536544000).

Almost surely, 2^16066321919 is an apocalyptic number.

16066321919 is a deficient number, since it is larger than the sum of its proper divisors (1103086081).

16066321919 is a wasteful number, since it uses less digits than its factorization.

16066321919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 839.

The product of its (nonzero) digits is 104976, while the sum is 44.

The spelling of 16066321919 in words is "sixteen billion, sixty-six million, three hundred twenty-one thousand, nine hundred nineteen".