43273404049 has 2 divisors, whose sum is σ = 43273404050. Its totient is φ = 43273404048.

The previous prime is 43273404023. The next prime is 43273404067. The reversal of 43273404049 is 94040437234.

43273404049 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27753227649 + 15520176400 = 166593^2 + 124580^2 .

It is a cyclic number.

It is not a de Polignac number, because 43273404049 - 2⁵ = 43273404017 is a prime.

It is not a weakly prime, because it can be changed into another prime (43273404079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21636702024 + 21636702025.

It is an arithmetic number, because the mean of its divisors is an integer number (21636702025).

Almost surely, 2^43273404049 is an apocalyptic number.

It is an amenable number.

43273404049 is a deficient number, since it is larger than the sum of its proper divisors (1).

43273404049 is an equidigital number, since it uses as much as digits as its factorization.

43273404049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 290304, while the sum is 40.

The spelling of 43273404049 in words is "forty-three billion, two hundred seventy-three million, four hundred four thousand, forty-nine".