12143543245020 has 288 divisors, whose sum is σ = 40767893187840. Its totient is φ = 2901293614080.

The previous prime is 12143543244983. The next prime is 12143543245027. The reversal of 12143543245020 is 2054234534121.

It is a happy number.

12143543245020 is a `hidden beast` number, since 1 + 2 + 1 + 43 + 543 + 2 + 4 + 50 + 20 = 666.

12143543245020 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-3 number, since 3×12143543245020³ (a number of 40 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12143543245027) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 67124727 + ... + 67305393.

It is an arithmetic number, because the mean of its divisors is an integer number (141555184680).

Almost surely, 2^{12143543245020} is an apocalyptic number.

12143543245020 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 12143543245020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20383946593920).

12143543245020 is an abundant number, since it is smaller than the sum of its proper divisors (28624349942820).

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

12143543245020 is a wasteful number, since it uses less digits than its factorization.

12143543245020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181185 (or 181180 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 36.

Adding to 12143543245020 its reverse (2054234534121), we get a palindrome (14197777779141).

The spelling of 12143543245020 in words is "twelve trillion, one hundred forty-three billion, five hundred forty-three million, two hundred forty-five thousand, twenty".