11550131444 has 48 divisors (see below), whose sum is σ = 21628992000. Its totient is φ = 5383778400.

The previous prime is 11550131413. The next prime is 11550131447. The reversal of 11550131444 is 44413105511.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11550131447) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1971119 + ... + 1976969.

It is an arithmetic number, because the mean of its divisors is an integer number (450604000).

Almost surely, 2^11550131444 is an apocalyptic number.

It is an amenable number.

11550131444 is a deficient number, since it is larger than the sum of its proper divisors (10078860556).

11550131444 is a wasteful number, since it uses less digits than its factorization.

11550131444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6420 (or 6418 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 29.

Adding to 11550131444 its reverse (44413105511), we get a palindrome (55963236955).

The spelling of 11550131444 in words is "eleven billion, five hundred fifty million, one hundred thirty-one thousand, four hundred forty-four".