6544213061 has 2 divisors, whose sum is σ = 6544213062. Its totient is φ = 6544213060.

The previous prime is 6544213021. The next prime is 6544213063. The reversal of 6544213061 is 1603124456.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6533650561 + 10562500 = 80831^2 + 3250^2 .

It is a cyclic number.

It is not a de Polignac number, because 6544213061 - 2²⁶ = 6477104197 is a prime.

Together with 6544213063, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6544213063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3272106530 + 3272106531.

It is an arithmetic number, because the mean of its divisors is an integer number (3272106531).

Almost surely, 2^6544213061 is an apocalyptic number.

It is an amenable number.

6544213061 is a deficient number, since it is larger than the sum of its proper divisors (1).

6544213061 is an equidigital number, since it uses as much as digits as its factorization.

6544213061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 6544213061 is about 80896.3105524597. The cubic root of 6544213061 is about 1870.4774497455.

The spelling of 6544213061 in words is "six billion, five hundred forty-four million, two hundred thirteen thousand, sixty-one".