11565143022 has 32 divisors (see below), whose sum is σ = 24370329600. Its totient is φ = 3648751488.

The previous prime is 11565142987. The next prime is 11565143033. The reversal of 11565143022 is 22034156511.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 77254 + ... + 170582.

It is an arithmetic number, because the mean of its divisors is an integer number (761572800).

Almost surely, 2^11565143022 is an apocalyptic number.

11565143022 is an abundant number, since it is smaller than the sum of its proper divisors (12805186578).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11565143022 is a wasteful number, since it uses less digits than its factorization.

11565143022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94440.

The product of its (nonzero) digits is 7200, while the sum is 30.

Adding to 11565143022 its reverse (22034156511), we get a palindrome (33599299533).

The spelling of 11565143022 in words is "eleven billion, five hundred sixty-five million, one hundred forty-three thousand, twenty-two".