544404544549 has 2 divisors, whose sum is σ = 544404544550. Its totient is φ = 544404544548.

The previous prime is 544404544531. The next prime is 544404544577. The reversal of 544404544549 is 945445404445.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 404515080225 + 139889464324 = 636015^2 + 374018^2 .

It is a cyclic number.

It is not a de Polignac number, because 544404544549 - 2¹¹ = 544404542501 is a prime.

It is a super-2 number, since 2×544404544549² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 544404544496 and 544404544505.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (544404544249) 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, 272202272274 + 272202272275.

It is an arithmetic number, because the mean of its divisors is an integer number (272202272275).

Almost surely, 2^544404544549 is an apocalyptic number.

It is an amenable number.

544404544549 is a deficient number, since it is larger than the sum of its proper divisors (1).

544404544549 is an equidigital number, since it uses as much as digits as its factorization.

544404544549 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18432000, while the sum is 52.

The spelling of 544404544549 in words is "five hundred forty-four billion, four hundred four million, five hundred forty-four thousand, five hundred forty-nine".