12140111544 has 64 divisors (see below), whose sum is σ = 34251120000. Its totient is φ = 3551963520.

The previous prime is 12140111537. The next prime is 12140111549. The reversal of 12140111544 is 44511104121.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12140111549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 785194 + ... + 800505.

It is an arithmetic number, because the mean of its divisors is an integer number (535173750).

Almost surely, 2^12140111544 is an apocalyptic number.

It is an amenable number.

12140111544 is an abundant number, since it is smaller than the sum of its proper divisors (22111008456).

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

12140111544 is a wasteful number, since it uses less digits than its factorization.

12140111544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1585748 (or 1585744 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 24.

Adding to 12140111544 its reverse (44511104121), we get a palindrome (56651215665).

The spelling of 12140111544 in words is "twelve billion, one hundred forty million, one hundred eleven thousand, five hundred forty-four".