1605065651053 has 2 divisors, whose sum is σ = 1605065651054. Its totient is φ = 1605065651052.

The previous prime is 1605065651029. The next prime is 1605065651107. The reversal of 1605065651053 is 3501565605061.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1197564714889 + 407500936164 = 1094333^2 + 638358^2 .

It is a cyclic number.

It is not a de Polignac number, because 1605065651053 - 2¹³ = 1605065642861 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1605065651653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 802532825526 + 802532825527.

It is an arithmetic number, because the mean of its divisors is an integer number (802532825527).

Almost surely, 2^{1605065651053} is an apocalyptic number.

It is an amenable number.

1605065651053 is a deficient number, since it is larger than the sum of its proper divisors (1).

1605065651053 is an equidigital number, since it uses as much as digits as its factorization.

1605065651053 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 405000, while the sum is 43.

The spelling of 1605065651053 in words is "one trillion, six hundred five billion, sixty-five million, six hundred fifty-one thousand, fifty-three".