6450644911 has 2 divisors, whose sum is σ = 6450644912. Its totient is φ = 6450644910.

The previous prime is 6450644909. The next prime is 6450644939. The reversal of 6450644911 is 1194460546.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6450644911 - 2¹ = 6450644909 is a prime.

It is a super-3 number, since 3×6450644911³ (a number of 30 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

Together with 6450644909, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6450644971) 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, 3225322455 + 3225322456.

It is an arithmetic number, because the mean of its divisors is an integer number (3225322456).

Almost surely, 2^6450644911 is an apocalyptic number.

6450644911 is a deficient number, since it is larger than the sum of its proper divisors (1).

6450644911 is an equidigital number, since it uses as much as digits as its factorization.

6450644911 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 103680, while the sum is 40.

The square root of 6450644911 is about 80315.9069611992. The cubic root of 6450644911 is about 1861.5200230340.

The spelling of 6450644911 in words is "six billion, four hundred fifty million, six hundred forty-four thousand, nine hundred eleven".