2543945011 has 2 divisors, whose sum is σ = 2543945012. Its totient is φ = 2543945010.

The previous prime is 2543945003. The next prime is 2543945023. The reversal of 2543945011 is 1105493452.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2543945011 - 2³ = 2543945003 is a prime.

It is not a weakly prime, because it can be changed into another prime (2543945071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1271972505 + 1271972506.

It is an arithmetic number, because the mean of its divisors is an integer number (1271972506).

Almost surely, 2^2543945011 is an apocalyptic number.

2543945011 is a deficient number, since it is larger than the sum of its proper divisors (1).

2543945011 is an equidigital number, since it uses as much as digits as its factorization.

2543945011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21600, while the sum is 34.

The square root of 2543945011 is about 50437.5357348077. The cubic root of 2543945011 is about 1365.1150034374.

The spelling of 2543945011 in words is "two billion, five hundred forty-three million, nine hundred forty-five thousand, eleven".