2539967543 has 2 divisors, whose sum is σ = 2539967544. Its totient is φ = 2539967542.

The previous prime is 2539967539. The next prime is 2539967587. The reversal of 2539967543 is 3457699352.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2539967543 - 2² = 2539967539 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2539967513) 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, 1269983771 + 1269983772.

It is an arithmetic number, because the mean of its divisors is an integer number (1269983772).

Almost surely, 2^2539967543 is an apocalyptic number.

2539967543 is a deficient number, since it is larger than the sum of its proper divisors (1).

2539967543 is an equidigital number, since it uses as much as digits as its factorization.

2539967543 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6123600, while the sum is 53.

The square root of 2539967543 is about 50398.0906681989. The cubic root of 2539967543 is about 1364.4031781076.

The spelling of 2539967543 in words is "two billion, five hundred thirty-nine million, nine hundred sixty-seven thousand, five hundred forty-three".