12535489944 has 48 divisors (see below), whose sum is σ = 34672641120. Its totient is φ = 4089591360.

The previous prime is 12535489927. The next prime is 12535489949. The reversal of 12535489944 is 44998453521.

It is a happy number.

12535489944 is a `hidden beast` number, since 1 + 2 + 5 + 3 + 548 + 9 + 94 + 4 = 666.

12535489944 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×12535489944² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12535489949) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 1848787 + ... + 1855554.

It is an arithmetic number, because the mean of its divisors is an integer number (722346690).

Almost surely, 2^12535489944 is an apocalyptic number.

It is an amenable number.

12535489944 is an abundant number, since it is smaller than the sum of its proper divisors (22137151176).

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

12535489944 is a wasteful number, since it uses less digits than its factorization.

12535489944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3704400 (or 3704393 counting only the distinct ones).

The product of its digits is 6220800, while the sum is 54.

The spelling of 12535489944 in words is "twelve billion, five hundred thirty-five million, four hundred eighty-nine thousand, nine hundred forty-four".