12113434140 has 96 divisors (see below), whose sum is σ = 35075518464. Its totient is φ = 3120353280.

The previous prime is 12113434129. The next prime is 12113434141. The reversal of 12113434140 is 4143431121.

It is a self number, because there is not a number n which added to its sum of digits gives 12113434140.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12113434141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1067577 + ... + 1078863.

It is an arithmetic number, because the mean of its divisors is an integer number (365369984).

Almost surely, 2^12113434140 is an apocalyptic number.

12113434140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12113434140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17537759232).

12113434140 is an abundant number, since it is smaller than the sum of its proper divisors (22962084324).

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

12113434140 is a wasteful number, since it uses less digits than its factorization.

12113434140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11907 (or 11905 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 24.

Adding to 12113434140 its reverse (4143431121), we get a palindrome (16256865261).

The spelling of 12113434140 in words is "twelve billion, one hundred thirteen million, four hundred thirty-four thousand, one hundred forty".