11565440283 has 8 divisors (see below), whose sum is σ = 15432536896. Its totient is φ = 7704318600.

The previous prime is 11565440251. The next prime is 11565440287. The reversal of 11565440283 is 38204456511.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11565440283 - 2⁵ = 11565440251 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11565440287) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1489213 + ... + 1496958.

It is an arithmetic number, because the mean of its divisors is an integer number (1929067112).

Almost surely, 2^11565440283 is an apocalyptic number.

11565440283 is a deficient number, since it is larger than the sum of its proper divisors (3867096613).

11565440283 is a wasteful number, since it uses less digits than its factorization.

11565440283 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2987465.

The product of its (nonzero) digits is 115200, while the sum is 39.

Adding to 11565440283 its reverse (38204456511), we get a palindrome (49769896794).

The spelling of 11565440283 in words is "eleven billion, five hundred sixty-five million, four hundred forty thousand, two hundred eighty-three".