43043347013321 has 2 divisors, whose sum is σ = 43043347013322. Its totient is φ = 43043347013320.

The previous prime is 43043347013309. The next prime is 43043347013333. The reversal of 43043347013321 is 12331074334034.

It is a balanced prime because it is at equal distance from previous prime (43043347013309) and next prime (43043347013333).

It can be written as a sum of positive squares in only one way, i.e., 42223172260096 + 820174753225 = 6497936^2 + 905635^2 .

It is a cyclic number.

It is not a de Polignac number, because 43043347013321 - 2²² = 43043342819017 is a prime.

It is not a weakly prime, because it can be changed into another prime (43043347013621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21521673506660 + 21521673506661.

It is an arithmetic number, because the mean of its divisors is an integer number (21521673506661).

Almost surely, 2^{43043347013321} is an apocalyptic number.

It is an amenable number.

43043347013321 is a deficient number, since it is larger than the sum of its proper divisors (1).

43043347013321 is an equidigital number, since it uses as much as digits as its factorization.

43043347013321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 217728, while the sum is 38.

The spelling of 43043347013321 in words is "forty-three trillion, forty-three billion, three hundred forty-seven million, thirteen thousand, three hundred twenty-one".