12143551052440 has 64 divisors (see below), whose sum is σ = 27409351095360. Its totient is φ = 4842072883200.

The previous prime is 12143551052407. The next prime is 12143551052459. The reversal of 12143551052440 is 4425015534121.

It is a self number, because there is not a number n which added to its sum of digits gives 12143551052440.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 72047304 + ... + 72215656.

It is an arithmetic number, because the mean of its divisors is an integer number (428271110865).

Almost surely, 2^{12143551052440} is an apocalyptic number.

12143551052440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12143551052440 is an abundant number, since it is smaller than the sum of its proper divisors (15265800042920).

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

12143551052440 is a wasteful number, since it uses less digits than its factorization.

12143551052440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174052 (or 174048 counting only the distinct ones).

The product of its (nonzero) digits is 96000, while the sum is 37.

Adding to 12143551052440 its reverse (4425015534121), we get a palindrome (16568566586561).

The spelling of 12143551052440 in words is "twelve trillion, one hundred forty-three billion, five hundred fifty-one million, fifty-two thousand, four hundred forty".