6436243799 has 2 divisors, whose sum is σ = 6436243800. Its totient is φ = 6436243798.

The previous prime is 6436243763. The next prime is 6436243811. The reversal of 6436243799 is 9973426346.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6436243799 - 2²⁰ = 6435195223 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6436243799.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6436243729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3218121899 + 3218121900.

It is an arithmetic number, because the mean of its divisors is an integer number (3218121900).

Almost surely, 2^6436243799 is an apocalyptic number.

6436243799 is a deficient number, since it is larger than the sum of its proper divisors (1).

6436243799 is an equidigital number, since it uses as much as digits as its factorization.

6436243799 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5878656, while the sum is 53.

The square root of 6436243799 is about 80226.2039423529. The cubic root of 6436243799 is about 1860.1337051724.

The spelling of 6436243799 in words is "six billion, four hundred thirty-six million, two hundred forty-three thousand, seven hundred ninety-nine".