6541116443 has 2 divisors, whose sum is σ = 6541116444. Its totient is φ = 6541116442.

The previous prime is 6541116433. The next prime is 6541116473. The reversal of 6541116443 is 3446111456.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6541116443 - 2²⁸ = 6272680987 is a prime.

It is not a weakly prime, because it can be changed into another prime (6541116433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3270558221 + 3270558222.

It is an arithmetic number, because the mean of its divisors is an integer number (3270558222).

Almost surely, 2^6541116443 is an apocalyptic number.

6541116443 is a deficient number, since it is larger than the sum of its proper divisors (1).

6541116443 is an equidigital number, since it uses as much as digits as its factorization.

6541116443 is an evil number, because the sum of its binary digits is even.

The product of its digits is 34560, while the sum is 35.

The square root of 6541116443 is about 80877.1688611811. The cubic root of 6541116443 is about 1870.1823764285.

Adding to 6541116443 its reverse (3446111456), we get a palindrome (9987227899).

The spelling of 6541116443 in words is "six billion, five hundred forty-one million, one hundred sixteen thousand, four hundred forty-three".