43485537569 has 2 divisors, whose sum is σ = 43485537570. Its totient is φ = 43485537568.

The previous prime is 43485537527. The next prime is 43485537607. The reversal of 43485537569 is 96573558434.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 36791843344 + 6693694225 = 191812^2 + 81815^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-43485537569 is a prime.

It is a super-2 number, since 2×43485537569² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (43485537509) 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, 21742768784 + 21742768785.

It is an arithmetic number, because the mean of its divisors is an integer number (21742768785).

Almost surely, 2^43485537569 is an apocalyptic number.

It is an amenable number.

43485537569 is a deficient number, since it is larger than the sum of its proper divisors (1).

43485537569 is an equidigital number, since it uses as much as digits as its factorization.

43485537569 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 54432000, while the sum is 59.

The spelling of 43485537569 in words is "forty-three billion, four hundred eighty-five million, five hundred thirty-seven thousand, five hundred sixty-nine".