11565143041 has 16 divisors (see below), whose sum is σ = 12358828800. Its totient is φ = 10790402688.

The previous prime is 11565143033. The next prime is 11565143047. The reversal of 11565143041 is 14034156511.

It is a cyclic number.

It is not a de Polignac number, because 11565143041 - 2³ = 11565143033 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11565142994 and 11565143012.

It is not an unprimeable number, because it can be changed into a prime (11565143047) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 991455 + ... + 1003051.

It is an arithmetic number, because the mean of its divisors is an integer number (772426800).

Almost surely, 2^11565143041 is an apocalyptic number.

It is an amenable number.

11565143041 is a deficient number, since it is larger than the sum of its proper divisors (793685759).

11565143041 is a wasteful number, since it uses less digits than its factorization.

11565143041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12408.

The product of its (nonzero) digits is 7200, while the sum is 31.

Adding to 11565143041 its reverse (14034156511), we get a palindrome (25599299552).

The spelling of 11565143041 in words is "eleven billion, five hundred sixty-five million, one hundred forty-three thousand, forty-one".