43145426057 has 2 divisors, whose sum is σ = 43145426058. Its totient is φ = 43145426056.

The previous prime is 43145426039. The next prime is 43145426099. The reversal of 43145426057 is 75062454134.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 31495245961 + 11650180096 = 177469^2 + 107936^2 .

It is a cyclic number.

It is not a de Polignac number, because 43145426057 - 2¹² = 43145421961 is a prime.

It is not a weakly prime, because it can be changed into another prime (43145426017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21572713028 + 21572713029.

It is an arithmetic number, because the mean of its divisors is an integer number (21572713029).

Almost surely, 2^43145426057 is an apocalyptic number.

It is an amenable number.

43145426057 is a deficient number, since it is larger than the sum of its proper divisors (1).

43145426057 is an equidigital number, since it uses as much as digits as its factorization.

43145426057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 403200, while the sum is 41.

The spelling of 43145426057 in words is "forty-three billion, one hundred forty-five million, four hundred twenty-six thousand, fifty-seven".