11438269565 has 4 divisors (see below), whose sum is σ = 13725923484. Its totient is φ = 9150615648.

The previous prime is 11438269559. The next prime is 11438269573. The reversal of 11438269565 is 56596283411.

11438269565 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 56596283411 = 1753 ⋅32285387.

It can be written as a sum of positive squares in 2 ways, for example, as 4024887364 + 7413382201 = 63442^2 + 86101^2 .

It is a cyclic number.

It is not a de Polignac number, because 11438269565 - 2²⁴ = 11421492349 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1143826952 + ... + 1143826961.

It is an arithmetic number, because the mean of its divisors is an integer number (3431480871).

Almost surely, 2^11438269565 is an apocalyptic number.

It is an amenable number.

11438269565 is a deficient number, since it is larger than the sum of its proper divisors (2287653919).

11438269565 is an equidigital number, since it uses as much as digits as its factorization.

11438269565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2287653918.

The product of its digits is 1555200, while the sum is 50.

The spelling of 11438269565 in words is "eleven billion, four hundred thirty-eight million, two hundred sixty-nine thousand, five hundred sixty-five".