6471242549 has 2 divisors, whose sum is σ = 6471242550. Its totient is φ = 6471242548.

The previous prime is 6471242537. The next prime is 6471242551. The reversal of 6471242549 is 9452421746.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6379216900 + 92025649 = 79870^2 + 9593^2 .

It is a cyclic number.

It is not a de Polignac number, because 6471242549 - 2¹² = 6471238453 is a prime.

Together with 6471242551, 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 (6471242249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3235621274 + 3235621275.

It is an arithmetic number, because the mean of its divisors is an integer number (3235621275).

Almost surely, 2^6471242549 is an apocalyptic number.

It is an amenable number.

6471242549 is a deficient number, since it is larger than the sum of its proper divisors (1).

6471242549 is an equidigital number, since it uses as much as digits as its factorization.

6471242549 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 483840, while the sum is 44.

The square root of 6471242549 is about 80444.0336445159. The cubic root of 6471242549 is about 1863.4992657944.

The spelling of 6471242549 in words is "six billion, four hundred seventy-one million, two hundred forty-two thousand, five hundred forty-nine".