11042044511 has 4 divisors (see below), whose sum is σ = 11066206992. Its totient is φ = 11017882032.

The previous prime is 11042044501. The next prime is 11042044529. The reversal of 11042044511 is 11544024011.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11042044511 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11042044501) 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, 12080555 + ... + 12081468.

It is an arithmetic number, because the mean of its divisors is an integer number (2766551748).

Almost surely, 2^11042044511 is an apocalyptic number.

11042044511 is a deficient number, since it is larger than the sum of its proper divisors (24162481).

11042044511 is an equidigital number, since it uses as much as digits as its factorization.

11042044511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24162480.

The product of its (nonzero) digits is 640, while the sum is 23.

Adding to 11042044511 its reverse (11544024011), we get a palindrome (22586068522).

The spelling of 11042044511 in words is "eleven billion, forty-two million, forty-four thousand, five hundred eleven".