7445544539 has 2 divisors, whose sum is σ = 7445544540. Its totient is φ = 7445544538.

The previous prime is 7445544529. The next prime is 7445544581. The reversal of 7445544539 is 9354455447.

It is a weak prime.

It is an emirp because it is prime and its reverse (9354455447) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7445544539 - 2⁴ = 7445544523 is a prime.

It is a super-2 number, since 2×7445544539² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (7445544529) 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, 3722772269 + 3722772270.

It is an arithmetic number, because the mean of its divisors is an integer number (3722772270).

Almost surely, 2^7445544539 is an apocalyptic number.

7445544539 is a deficient number, since it is larger than the sum of its proper divisors (1).

7445544539 is an equidigital number, since it uses as much as digits as its factorization.

7445544539 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6048000, while the sum is 50.

The square root of 7445544539 is about 86287.5688555426. The cubic root of 7445544539 is about 1952.6848433575.

The spelling of 7445544539 in words is "seven billion, four hundred forty-five million, five hundred forty-four thousand, five hundred thirty-nine".