6516454589 has 2 divisors, whose sum is σ = 6516454590. Its totient is φ = 6516454588.

The previous prime is 6516454561. The next prime is 6516454591. The reversal of 6516454589 is 9854546156.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6509746489 + 6708100 = 80683^2 + 2590^2 .

It is a cyclic number.

It is not a de Polignac number, because 6516454589 - 2⁸ = 6516454333 is a prime.

Together with 6516454591, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6516454589.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6516454289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3258227294 + 3258227295.

It is an arithmetic number, because the mean of its divisors is an integer number (3258227295).

Almost surely, 2^6516454589 is an apocalyptic number.

It is an amenable number.

6516454589 is a deficient number, since it is larger than the sum of its proper divisors (1).

6516454589 is an equidigital number, since it uses as much as digits as its factorization.

6516454589 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5184000, while the sum is 53.

The square root of 6516454589 is about 80724.5600111887. The cubic root of 6516454589 is about 1867.8290446813.

The spelling of 6516454589 in words is "six billion, five hundred sixteen million, four hundred fifty-four thousand, five hundred eighty-nine".