2543345009 has 2 divisors, whose sum is σ = 2543345010. Its totient is φ = 2543345008.

The previous prime is 2543344943. The next prime is 2543345017. The reversal of 2543345009 is 9005433452.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2532102400 + 11242609 = 50320^2 + 3353^2 .

It is a cyclic number.

It is not a de Polignac number, because 2543345009 - 2²⁴ = 2526567793 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2543345009.

It is not a weakly prime, because it can be changed into another prime (2543345089) 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, 1271672504 + 1271672505.

It is an arithmetic number, because the mean of its divisors is an integer number (1271672505).

Almost surely, 2^2543345009 is an apocalyptic number.

It is an amenable number.

2543345009 is a deficient number, since it is larger than the sum of its proper divisors (1).

2543345009 is an equidigital number, since it uses as much as digits as its factorization.

2543345009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64800, while the sum is 35.

The square root of 2543345009 is about 50431.5874130490. The cubic root of 2543345009 is about 1365.0076719593.

The spelling of 2543345009 in words is "two billion, five hundred forty-three million, three hundred forty-five thousand, nine".