2805543639343 has 2 divisors, whose sum is σ = 2805543639344. Its totient is φ = 2805543639342.

The previous prime is 2805543639341. The next prime is 2805543639361. The reversal of 2805543639343 is 3439363455082.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2805543639343 - 2¹ = 2805543639341 is a prime.

It is a super-2 number, since 2×2805543639343² (a number of 26 digits) contains 22 as substring.

Together with 2805543639341, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2805543639341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1402771819671 + 1402771819672.

It is an arithmetic number, because the mean of its divisors is an integer number (1402771819672).

Almost surely, 2^{2805543639343} is an apocalyptic number.

2805543639343 is a deficient number, since it is larger than the sum of its proper divisors (1).

2805543639343 is an equidigital number, since it uses as much as digits as its factorization.

2805543639343 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27993600, while the sum is 55.

The spelling of 2805543639343 in words is "two trillion, eight hundred five billion, five hundred forty-three million, six hundred thirty-nine thousand, three hundred forty-three".