1605542073171 has 16 divisors (see below), whose sum is σ = 2270998241568. Its totient is φ = 1005465344000.

The previous prime is 1605542073133. The next prime is 1605542073173. The reversal of 1605542073171 is 1713702455061.

It is a cyclic number.

It is not a de Polignac number, because 1605542073171 - 2²⁵ = 1605508518739 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (1605542073173) 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 15 ways as a sum of consecutive naturals, for example, 30185730 + ... + 30238871.

It is an arithmetic number, because the mean of its divisors is an integer number (141937390098).

Almost surely, 2^{1605542073171} is an apocalyptic number.

1605542073171 is a deficient number, since it is larger than the sum of its proper divisors (665456168397).

1605542073171 is a wasteful number, since it uses less digits than its factorization.

1605542073171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60425142.

The product of its (nonzero) digits is 176400, while the sum is 42.

The spelling of 1605542073171 in words is "one trillion, six hundred five billion, five hundred forty-two million, seventy-three thousand, one hundred seventy-one".