43700381434813 has 2 divisors, whose sum is σ = 43700381434814. Its totient is φ = 43700381434812.

The previous prime is 43700381434777. The next prime is 43700381434859. The reversal of 43700381434813 is 31843418300734.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 42965114629284 + 735266805529 = 6554778^2 + 857477^2 .

It is a cyclic number.

It is not a de Polignac number, because 43700381434813 - 2⁹ = 43700381434301 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43700381434873) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21850190717406 + 21850190717407.

It is an arithmetic number, because the mean of its divisors is an integer number (21850190717407).

Almost surely, 2^{43700381434813} is an apocalyptic number.

It is an amenable number.

43700381434813 is a deficient number, since it is larger than the sum of its proper divisors (1).

43700381434813 is an equidigital number, since it uses as much as digits as its factorization.

43700381434813 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2322432, while the sum is 49.

The spelling of 43700381434813 in words is "forty-three trillion, seven hundred billion, three hundred eighty-one million, four hundred thirty-four thousand, eight hundred thirteen".