12131054544 has 40 divisors (see below), whose sum is σ = 35815495360. Its totient is φ = 3466015488.

The previous prime is 12131054479. The next prime is 12131054549. The reversal of 12131054544 is 44545013121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12131054549) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18051829 + ... + 18052500.

It is an arithmetic number, because the mean of its divisors is an integer number (895387384).

Almost surely, 2^12131054544 is an apocalyptic number.

12131054544 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

12131054544 is an abundant number, since it is smaller than the sum of its proper divisors (23684440816).

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

12131054544 is a wasteful number, since it uses less digits than its factorization.

12131054544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36104347 (or 36104341 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 30.

Adding to 12131054544 its reverse (44545013121), we get a palindrome (56676067665).

The spelling of 12131054544 in words is "twelve billion, one hundred thirty-one million, fifty-four thousand, five hundred forty-four".