2543945023 has 2 divisors, whose sum is σ = 2543945024. Its totient is φ = 2543945022.

The previous prime is 2543945011. The next prime is 2543945071. The reversal of 2543945023 is 3205493452.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2543945023 - 2⁹ = 2543944511 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2543945003) 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, 1271972511 + 1271972512.

It is an arithmetic number, because the mean of its divisors is an integer number (1271972512).

Almost surely, 2^2543945023 is an apocalyptic number.

2543945023 is a deficient number, since it is larger than the sum of its proper divisors (1).

2543945023 is an equidigital number, since it uses as much as digits as its factorization.

2543945023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 129600, while the sum is 37.

The square root of 2543945023 is about 50437.5358537667. The cubic root of 2543945023 is about 1365.1150055838.

The spelling of 2543945023 in words is "two billion, five hundred forty-three million, nine hundred forty-five thousand, twenty-three".