4243871543872 has 56 divisors (see below), whose sum is σ = 8501530014432. Its totient is φ = 2101778380800.

The previous prime is 4243871543851. The next prime is 4243871543903. The reversal of 4243871543872 is 2783451783424.

It is a happy number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 10880547 + ... + 11263837.

It is an arithmetic number, because the mean of its divisors is an integer number (151813035972).

Almost surely, 2^{4243871543872} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4243871543872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4250765007216).

4243871543872 is an abundant number, since it is smaller than the sum of its proper divisors (4257658470560).

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

4243871543872 is a wasteful number, since it uses less digits than its factorization.

4243871543872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 384947 (or 384937 counting only the distinct ones).

The product of its digits is 36126720, while the sum is 58.

The spelling of 4243871543872 in words is "four trillion, two hundred forty-three billion, eight hundred seventy-one million, five hundred forty-three thousand, eight hundred seventy-two".