6633799409 has 2 divisors, whose sum is σ = 6633799410. Its totient is φ = 6633799408.

The previous prime is 6633799397. The next prime is 6633799411. The reversal of 6633799409 is 9049973366.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3412896400 + 3220903009 = 58420^2 + 56753^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6633799409 is a prime.

Together with 6633799411, 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 (6633799429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3316899704 + 3316899705.

It is an arithmetic number, because the mean of its divisors is an integer number (3316899705).

Almost surely, 2^6633799409 is an apocalyptic number.

It is an amenable number.

6633799409 is a deficient number, since it is larger than the sum of its proper divisors (1).

6633799409 is an equidigital number, since it uses as much as digits as its factorization.

6633799409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6613488, while the sum is 56.

The square root of 6633799409 is about 81448.1393832910. The cubic root of 6633799409 is about 1878.9740336291.

The spelling of 6633799409 in words is "six billion, six hundred thirty-three million, seven hundred ninety-nine thousand, four hundred nine".