11131261044 has 48 divisors (see below), whose sum is σ = 26426453760. Its totient is φ = 3646010880.

The previous prime is 11131260989. The next prime is 11131261051. The reversal of 11131261044 is 44016213111.

It is a happy number.

11131261044 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 213952 + ... + 260840.

It is an arithmetic number, because the mean of its divisors is an integer number (550551120).

Almost surely, 2^11131261044 is an apocalyptic number.

It is an amenable number.

11131261044 is an abundant number, since it is smaller than the sum of its proper divisors (15295192716).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11131261044 is a wasteful number, since it uses less digits than its factorization.

11131261044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47240 (or 47238 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 24.

Adding to 11131261044 its reverse (44016213111), we get a palindrome (55147474155).

The spelling of 11131261044 in words is "eleven billion, one hundred thirty-one million, two hundred sixty-one thousand, forty-four".