6514432649 has 2 divisors, whose sum is σ = 6514432650. Its totient is φ = 6514432648.

The previous prime is 6514432627. The next prime is 6514432651. The reversal of 6514432649 is 9462344156.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6049728400 + 464704249 = 77780^2 + 21557^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6514432649 is a prime.

Together with 6514432651, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (6514432609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3257216324 + 3257216325.

It is an arithmetic number, because the mean of its divisors is an integer number (3257216325).

Almost surely, 2^6514432649 is an apocalyptic number.

It is an amenable number.

6514432649 is a deficient number, since it is larger than the sum of its proper divisors (1).

6514432649 is an equidigital number, since it uses as much as digits as its factorization.

6514432649 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 622080, while the sum is 44.

The square root of 6514432649 is about 80712.0353417011. The cubic root of 6514432649 is about 1867.6358399827.

The spelling of 6514432649 in words is "six billion, five hundred fourteen million, four hundred thirty-two thousand, six hundred forty-nine".