43971089084437 has 2 divisors, whose sum is σ = 43971089084438. Its totient is φ = 43971089084436.

The previous prime is 43971089084411. The next prime is 43971089084509. The reversal of 43971089084437 is 73448098017934.

43971089084437 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 35870684337796 + 8100404746641 = 5989214^2 + 2846121^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-43971089084437 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43971089084837) by changing a digit.

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 as a sum of consecutive naturals, namely, 21985544542218 + 21985544542219.

It is an arithmetic number, because the mean of its divisors is an integer number (21985544542219).

Almost surely, 2^{43971089084437} is an apocalyptic number.

It is an amenable number.

43971089084437 is a deficient number, since it is larger than the sum of its proper divisors (1).

43971089084437 is an equidigital number, since it uses as much as digits as its factorization.

43971089084437 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 146313216, while the sum is 67.

The spelling of 43971089084437 in words is "forty-three trillion, nine hundred seventy-one billion, eighty-nine million, eighty-four thousand, four hundred thirty-seven".