11005131044 has 12 divisors (see below), whose sum is σ = 19438970544. Its totient is φ = 5451139464.

The previous prime is 11005131043. The next prime is 11005131047. The reversal of 11005131044 is 44013150011.

It is a happy number.

It is a super-2 number, since 2×11005131044² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11005131043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12856034 + ... + 12856889.

It is an arithmetic number, because the mean of its divisors is an integer number (1619914212).

Almost surely, 2^11005131044 is an apocalyptic number.

It is an amenable number.

11005131044 is a deficient number, since it is larger than the sum of its proper divisors (8433839500).

11005131044 is a wasteful number, since it uses less digits than its factorization.

11005131044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25713034 (or 25713032 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 20.

Adding to 11005131044 its reverse (44013150011), we get a palindrome (55018281055).

The spelling of 11005131044 in words is "eleven billion, five million, one hundred thirty-one thousand, forty-four".