43243875872 has 18 divisors (see below), whose sum is σ = 85138696629. Its totient is φ = 21621349760.

The previous prime is 43243875691. The next prime is 43243875901. The reversal of 43243875872 is 27857834234.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 2 ways, for example, as 24484738576 + 18759137296 = 156476^2 + 136964^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=147044.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 1157972 + ... + 1194732.

Almost surely, 2^43243875872 is an apocalyptic number.

It is an amenable number.

43243875872 is a deficient number, since it is larger than the sum of its proper divisors (41894820757).

43243875872 is an frugal number, since it uses more digits than its factorization.

43243875872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73532 (or 36763 counting only the distinct ones).

The product of its digits is 9031680, while the sum is 53.

The spelling of 43243875872 in words is "forty-three billion, two hundred forty-three million, eight hundred seventy-five thousand, eight hundred seventy-two".