43040343331201 has 2 divisors, whose sum is σ = 43040343331202. Its totient is φ = 43040343331200.

The previous prime is 43040343331171. The next prime is 43040343331267. The reversal of 43040343331201 is 10213334304034.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 31883413971600 + 11156929359601 = 5646540^2 + 3340199^2 .

It is a cyclic number.

It is not a de Polignac number, because 43040343331201 - 2²⁵ = 43040309776769 is a prime.

It is not a weakly prime, because it can be changed into another prime (43040313331201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21520171665600 + 21520171665601.

It is an arithmetic number, because the mean of its divisors is an integer number (21520171665601).

Almost surely, 2^{43040343331201} is an apocalyptic number.

It is an amenable number.

43040343331201 is a deficient number, since it is larger than the sum of its proper divisors (1).

43040343331201 is an equidigital number, since it uses as much as digits as its factorization.

43040343331201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31104, while the sum is 31.

Adding to 43040343331201 its reverse (10213334304034), we get a palindrome (53253677635235).

The spelling of 43040343331201 in words is "forty-three trillion, forty billion, three hundred forty-three million, three hundred thirty-one thousand, two hundred one".