43556560249 has 2 divisors, whose sum is σ = 43556560250. Its totient is φ = 43556560248.

The previous prime is 43556560211. The next prime is 43556560277. The reversal of 43556560249 is 94206565534.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30171690000 + 13384870249 = 173700^2 + 115693^2 .

It is a cyclic number.

It is not a de Polignac number, because 43556560249 - 2⁹ = 43556559737 is a prime.

It is not a weakly prime, because it can be changed into another prime (43556560049) 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, 21778280124 + 21778280125.

It is an arithmetic number, because the mean of its divisors is an integer number (21778280125).

Almost surely, 2^43556560249 is an apocalyptic number.

It is an amenable number.

43556560249 is a deficient number, since it is larger than the sum of its proper divisors (1).

43556560249 is an equidigital number, since it uses as much as digits as its factorization.

43556560249 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3888000, while the sum is 49.

The spelling of 43556560249 in words is "forty-three billion, five hundred fifty-six million, five hundred sixty thousand, two hundred forty-nine".