11443440011 has 4 divisors (see below), whose sum is σ = 11446021224. Its totient is φ = 11440858800.

The previous prime is 11443440007. The next prime is 11443440097. The reversal of 11443440011 is 11004434411.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11443440011 - 2² = 11443440007 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11443440611) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1283945 + ... + 1292826.

It is an arithmetic number, because the mean of its divisors is an integer number (2861505306).

Almost surely, 2^11443440011 is an apocalyptic number.

11443440011 is a deficient number, since it is larger than the sum of its proper divisors (2581213).

11443440011 is an equidigital number, since it uses as much as digits as its factorization.

11443440011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2581212.

The product of its (nonzero) digits is 768, while the sum is 23.

Adding to 11443440011 its reverse (11004434411), we get a palindrome (22447874422).

It can be divided in two parts, 114434400 and 11, that added together give a palindrome (114434411).

The spelling of 11443440011 in words is "eleven billion, four hundred forty-three million, four hundred forty thousand, eleven".