43189928864 has 24 divisors (see below), whose sum is σ = 85521687300. Its totient is φ = 21470135296.

The previous prime is 43189928861. The next prime is 43189928909. The reversal of 43189928864 is 46882998134.

It can be written as a sum of positive squares in 2 ways, for example, as 39624883600 + 3565045264 = 199060^2 + 59708^2 .

It is a junction number, because it is equal to n+sod(n) for n = 43189928797 and 43189928806.

It is not an unprimeable number, because it can be changed into a prime (43189928861) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3895289 + ... + 3906360.

Almost surely, 2^43189928864 is an apocalyptic number.

It is an amenable number.

43189928864 is a deficient number, since it is larger than the sum of its proper divisors (42331758436).

43189928864 is a wasteful number, since it uses less digits than its factorization.

43189928864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7801832 (or 7801824 counting only the distinct ones).

The product of its digits is 23887872, while the sum is 62.

The spelling of 43189928864 in words is "forty-three billion, one hundred eighty-nine million, nine hundred twenty-eight thousand, eight hundred sixty-four".