1605065651013 has 64 divisors (see below), whose sum is σ = 2565297561600. Its totient is φ = 881819136000.

The previous prime is 1605065650957. The next prime is 1605065651017. The reversal of 1605065651013 is 3101565605061.

It is not a de Polignac number, because 1605065651013 - 2⁸ = 1605065650757 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1605065651017) 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 63 ways as a sum of consecutive naturals, for example, 1265973 + ... + 2193813.

It is an arithmetic number, because the mean of its divisors is an integer number (40082774400).

Almost surely, 2^{1605065651013} is an apocalyptic number.

It is an amenable number.

1605065651013 is a deficient number, since it is larger than the sum of its proper divisors (960231910587).

1605065651013 is a wasteful number, since it uses less digits than its factorization.

1605065651013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 927994.

The product of its (nonzero) digits is 81000, while the sum is 39.

The spelling of 1605065651013 in words is "one trillion, six hundred five billion, sixty-five million, six hundred fifty-one thousand, thirteen".