43238571704813 has 2 divisors, whose sum is σ = 43238571704814. Its totient is φ = 43238571704812.

The previous prime is 43238571704777. The next prime is 43238571704821. The reversal of 43238571704813 is 31840717583234.

43238571704813 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 33186609251524 + 10051962453289 = 5760782^2 + 3170483^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-43238571704813 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43238571704843) 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, 21619285852406 + 21619285852407.

It is an arithmetic number, because the mean of its divisors is an integer number (21619285852407).

Almost surely, 2^{43238571704813} is an apocalyptic number.

It is an amenable number.

43238571704813 is a deficient number, since it is larger than the sum of its proper divisors (1).

43238571704813 is an equidigital number, since it uses as much as digits as its factorization.

43238571704813 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13547520, while the sum is 56.

The spelling of 43238571704813 in words is "forty-three trillion, two hundred thirty-eight billion, five hundred seventy-one million, seven hundred four thousand, eight hundred thirteen".