43387843732 has 6 divisors (see below), whose sum is σ = 75928726538. Its totient is φ = 21693921864.

The previous prime is 43387843729. The next prime is 43387843777. The reversal of 43387843732 is 23734878334.

It can be written as a sum of positive squares in only one way, i.e., 26499281796 + 16888561936 = 162786^2 + 129956^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 43387843732.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5423480463 + ... + 5423480470.

Almost surely, 2^43387843732 is an apocalyptic number.

It is an amenable number.

43387843732 is a deficient number, since it is larger than the sum of its proper divisors (32540882806).

43387843732 is a wasteful number, since it uses less digits than its factorization.

43387843732 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10846960937 (or 10846960935 counting only the distinct ones).

The product of its digits is 8128512, while the sum is 52.

The spelling of 43387843732 in words is "forty-three billion, three hundred eighty-seven million, eight hundred forty-three thousand, seven hundred thirty-two".