1605665006053 has 6 divisors (see below), whose sum is σ = 1705671823346. Its totient is φ = 1511214123072.

The previous prime is 1605665006047. The next prime is 1605665006093. The reversal of 1605665006053 is 3506005665061.

It can be written as a sum of positive squares in 3 ways, for example, as 1108762668484 + 496902337569 = 1052978^2 + 704913^2 .

It is not a de Polignac number, because 1605665006053 - 2⁹ = 1605665005541 is a prime.

It is a super-2 number, since 2×1605665006053² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1605665006093) 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 5 ways as a sum of consecutive naturals, for example, 2777966850 + ... + 2777967427.

Almost surely, 2^{1605665006053} is an apocalyptic number.

It is an amenable number.

1605665006053 is a deficient number, since it is larger than the sum of its proper divisors (100006817293).

1605665006053 is an equidigital number, since it uses as much as digits as its factorization.

1605665006053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5555934311 (or 5555934294 counting only the distinct ones).

The product of its (nonzero) digits is 486000, while the sum is 43.

The spelling of 1605665006053 in words is "one trillion, six hundred five billion, six hundred sixty-five million, six thousand, fifty-three".