43581137303741 has 2 divisors, whose sum is σ = 43581137303742. Its totient is φ = 43581137303740.

The previous prime is 43581137303689. The next prime is 43581137303819. The reversal of 43581137303741 is 14730373118534.

43581137303741 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 43449256476025 + 131880827716 = 6591605^2 + 363154^2 .

It is a cyclic number.

It is not a de Polignac number, because 43581137303741 - 2¹⁸ = 43581137041597 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 43581137303741.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43581137303941) 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, 21790568651870 + 21790568651871.

It is an arithmetic number, because the mean of its divisors is an integer number (21790568651871).

Almost surely, 2^{43581137303741} is an apocalyptic number.

It is an amenable number.

43581137303741 is a deficient number, since it is larger than the sum of its proper divisors (1).

43581137303741 is an equidigital number, since it uses as much as digits as its factorization.

43581137303741 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2540160, while the sum is 50.

The spelling of 43581137303741 in words is "forty-three trillion, five hundred eighty-one billion, one hundred thirty-seven million, three hundred three thousand, seven hundred forty-one".