6485855543 has 2 divisors, whose sum is σ = 6485855544. Its totient is φ = 6485855542.

The previous prime is 6485855531. The next prime is 6485855581. The reversal of 6485855543 is 3455585846.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6485855543 - 2⁴ = 6485855527 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6485855843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3242927771 + 3242927772.

It is an arithmetic number, because the mean of its divisors is an integer number (3242927772).

Almost surely, 2^6485855543 is an apocalyptic number.

6485855543 is a deficient number, since it is larger than the sum of its proper divisors (1).

6485855543 is an equidigital number, since it uses as much as digits as its factorization.

6485855543 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11520000, while the sum is 53.

The square root of 6485855543 is about 80534.8095111673. The cubic root of 6485855543 is about 1864.9008941867.

The spelling of 6485855543 in words is "six billion, four hundred eighty-five million, eight hundred fifty-five thousand, five hundred forty-three".