144544561643 has 2 divisors, whose sum is σ = 144544561644. Its totient is φ = 144544561642.

The previous prime is 144544561613. The next prime is 144544561723. The reversal of 144544561643 is 346165445441.

It is a weak prime.

It is an emirp because it is prime and its reverse (346165445441) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 144544561643 - 2¹⁴ = 144544545259 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (144544561613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72272280821 + 72272280822.

It is an arithmetic number, because the mean of its divisors is an integer number (72272280822).

Almost surely, 2^144544561643 is an apocalyptic number.

144544561643 is a deficient number, since it is larger than the sum of its proper divisors (1).

144544561643 is an equidigital number, since it uses as much as digits as its factorization.

144544561643 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2764800, while the sum is 47.

The spelling of 144544561643 in words is "one hundred forty-four billion, five hundred forty-four million, five hundred sixty-one thousand, six hundred forty-three".