2544663361 has 2 divisors, whose sum is σ = 2544663362. Its totient is φ = 2544663360.

The previous prime is 2544663311. The next prime is 2544663389. The reversal of 2544663361 is 1633664452.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2510511025 + 34152336 = 50105^2 + 5844^2 .

It is a cyclic number.

It is not a de Polignac number, because 2544663361 - 2²¹ = 2542566209 is a prime.

It is not a weakly prime, because it can be changed into another prime (2544663301) 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, 1272331680 + 1272331681.

It is an arithmetic number, because the mean of its divisors is an integer number (1272331681).

Almost surely, 2^2544663361 is an apocalyptic number.

It is an amenable number.

2544663361 is a deficient number, since it is larger than the sum of its proper divisors (1).

2544663361 is an equidigital number, since it uses as much as digits as its factorization.

2544663361 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 311040, while the sum is 40.

The square root of 2544663361 is about 50444.6564167108. The cubic root of 2544663361 is about 1365.2434834256.

The spelling of 2544663361 in words is "two billion, five hundred forty-four million, six hundred sixty-three thousand, three hundred sixty-one".