144544452509 has 2 divisors, whose sum is σ = 144544452510. Its totient is φ = 144544452508.

The previous prime is 144544452473. The next prime is 144544452523. The reversal of 144544452509 is 905254445441.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 75649752025 + 68894700484 = 275045^2 + 262478^2 .

It is an emirp because it is prime and its reverse (905254445441) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 144544452509 - 2²⁴ = 144527675293 is a prime.

It is a super-2 number, since 2×144544452509² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (144544452209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72272226254 + 72272226255.

It is an arithmetic number, because the mean of its divisors is an integer number (72272226255).

Almost surely, 2^144544452509 is an apocalyptic number.

It is an amenable number.

144544452509 is a deficient number, since it is larger than the sum of its proper divisors (1).

144544452509 is an equidigital number, since it uses as much as digits as its factorization.

144544452509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2304000, while the sum is 47.

The spelling of 144544452509 in words is "one hundred forty-four billion, five hundred forty-four million, four hundred fifty-two thousand, five hundred nine".