16042533665 has 16 divisors (see below), whose sum is σ = 19458319440. Its totient is φ = 12695961600.

The previous prime is 16042533581. The next prime is 16042533671. The reversal of 16042533665 is 56633524061.

16042533665 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 3271725601 + 12770808064 = 57199^2 + 113008^2 .

It is not a de Polignac number, because 16042533665 - 2¹⁶ = 16042468129 is a prime.

It is a Curzon number.

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 15 ways as a sum of consecutive naturals, for example, 1298015 + ... + 1310315.

It is an arithmetic number, because the mean of its divisors is an integer number (1216144965).

Almost surely, 2^16042533665 is an apocalyptic number.

It is an amenable number.

16042533665 is a deficient number, since it is larger than the sum of its proper divisors (3415785775).

16042533665 is a wasteful number, since it uses less digits than its factorization.

16042533665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15092.

The product of its (nonzero) digits is 388800, while the sum is 41.

The spelling of 16042533665 in words is "sixteen billion, forty-two million, five hundred thirty-three thousand, six hundred sixty-five".