43385516305841 has 2 divisors, whose sum is σ = 43385516305842. Its totient is φ = 43385516305840.

The previous prime is 43385516305783. The next prime is 43385516305867. The reversal of 43385516305841 is 14850361558334.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 36286467630625 + 7099048675216 = 6023825^2 + 2664404^2 .

It is a cyclic number.

It is not a de Polignac number, because 43385516305841 - 2¹⁴ = 43385516289457 is a prime.

It is not a weakly prime, because it can be changed into another prime (43385516305141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21692758152920 + 21692758152921.

It is an arithmetic number, because the mean of its divisors is an integer number (21692758152921).

Almost surely, 2^{43385516305841} is an apocalyptic number.

It is an amenable number.

43385516305841 is a deficient number, since it is larger than the sum of its proper divisors (1).

43385516305841 is an equidigital number, since it uses as much as digits as its factorization.

43385516305841 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20736000, while the sum is 56.

The spelling of 43385516305841 in words is "forty-three trillion, three hundred eighty-five billion, five hundred sixteen million, three hundred five thousand, eight hundred forty-one".