2144345900549 has 2 divisors, whose sum is σ = 2144345900550. Its totient is φ = 2144345900548.

The previous prime is 2144345900539. The next prime is 2144345900611. The reversal of 2144345900549 is 9450095434412.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1707268890625 + 437077009924 = 1306625^2 + 661118^2 .

It is a cyclic number.

It is not a de Polignac number, because 2144345900549 - 2⁸ = 2144345900293 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2144345900497 and 2144345900506.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2144345900539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1072172950274 + 1072172950275.

It is an arithmetic number, because the mean of its divisors is an integer number (1072172950275).

Almost surely, 2^{2144345900549} is an apocalyptic number.

It is an amenable number.

2144345900549 is a deficient number, since it is larger than the sum of its proper divisors (1).

2144345900549 is an equidigital number, since it uses as much as digits as its factorization.

2144345900549 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3110400, while the sum is 50.

The spelling of 2144345900549 in words is "two trillion, one hundred forty-four billion, three hundred forty-five million, nine hundred thousand, five hundred forty-nine".