6636950459 has 2 divisors, whose sum is σ = 6636950460. Its totient is φ = 6636950458.

The previous prime is 6636950389. The next prime is 6636950461. The reversal of 6636950459 is 9540596366.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6636950459 - 2¹² = 6636946363 is a prime.

It is a super-2 number, since 2×6636950459² = 88098222790440621362, which contains 22 as substring.

Together with 6636950461, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6636950459.

It is not a weakly prime, because it can be changed into another prime (6636950479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3318475229 + 3318475230.

It is an arithmetic number, because the mean of its divisors is an integer number (3318475230).

Almost surely, 2^6636950459 is an apocalyptic number.

6636950459 is a deficient number, since it is larger than the sum of its proper divisors (1).

6636950459 is an equidigital number, since it uses as much as digits as its factorization.

6636950459 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5248800, while the sum is 53.

The square root of 6636950459 is about 81467.4809908837. The cubic root of 6636950459 is about 1879.2714903133.

The spelling of 6636950459 in words is "six billion, six hundred thirty-six million, nine hundred fifty thousand, four hundred fifty-nine".