43042843505820 has 24 divisors (see below), whose sum is σ = 120519961816464. Its totient is φ = 11478091601536.

The previous prime is 43042843505819. The next prime is 43042843505911. The reversal of 43042843505820 is 2850534824034.

43042843505820 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 43042843505820.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 358690362489 + ... + 358690362608.

It is an arithmetic number, because the mean of its divisors is an integer number (5021665075686).

Almost surely, 2^{43042843505820} is an apocalyptic number.

It is an amenable number.

43042843505820 is an abundant number, since it is smaller than the sum of its proper divisors (77477118310644).

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

43042843505820 is a wasteful number, since it uses less digits than its factorization.

43042843505820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 717380725109 (or 717380725107 counting only the distinct ones).

The product of its (nonzero) digits is 3686400, while the sum is 48.

The spelling of 43042843505820 in words is "forty-three trillion, forty-two billion, eight hundred forty-three million, five hundred five thousand, eight hundred twenty".