2127563042065 has 16 divisors (see below), whose sum is σ = 2566418036688. Its totient is φ = 1693156294656.

The previous prime is 2127563042053. The next prime is 2127563042081. The reversal of 2127563042065 is 5602403657212.

It can be written as a sum of positive squares in 8 ways, for example, as 191802830209 + 1935760211856 = 437953^2 + 1391316^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2127563042065 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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, 33794697 + ... + 33857593.

It is an arithmetic number, because the mean of its divisors is an integer number (160401127293).

Almost surely, 2^{2127563042065} is an apocalyptic number.

It is an amenable number.

2127563042065 is a deficient number, since it is larger than the sum of its proper divisors (438854994623).

2127563042065 is a wasteful number, since it uses less digits than its factorization.

2127563042065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98148.

The product of its (nonzero) digits is 604800, while the sum is 43.

Adding to 2127563042065 its reverse (5602403657212), we get a palindrome (7729966699277).

The spelling of 2127563042065 in words is "two trillion, one hundred twenty-seven billion, five hundred sixty-three million, forty-two thousand, sixty-five".