6541116473 has 2 divisors, whose sum is σ = 6541116474. Its totient is φ = 6541116472.

The previous prime is 6541116443. The next prime is 6541116481. The reversal of 6541116473 is 3746111456.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4127163049 + 2413953424 = 64243^2 + 49132^2 .

It is a cyclic number.

It is not a de Polignac number, because 6541116473 - 2⁸ = 6541116217 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, 3270558236 + 3270558237.

It is an arithmetic number, because the mean of its divisors is an integer number (3270558237).

Almost surely, 2^6541116473 is an apocalyptic number.

It is an amenable number.

6541116473 is a deficient number, since it is larger than the sum of its proper divisors (1).

6541116473 is an equidigital number, since it uses as much as digits as its factorization.

6541116473 is an evil number, because the sum of its binary digits is even.

The product of its digits is 60480, while the sum is 38.

The square root of 6541116473 is about 80877.1690466475. The cubic root of 6541116473 is about 1870.1823792877.

The spelling of 6541116473 in words is "six billion, five hundred forty-one million, one hundred sixteen thousand, four hundred seventy-three".