66433624039 has 2 divisors, whose sum is σ = 66433624040. Its totient is φ = 66433624038.

The previous prime is 66433624021. The next prime is 66433624069. The reversal of 66433624039 is 93042633466.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 66433624039 - 2¹⁵ = 66433591271 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 66433624039.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66433624069) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33216812019 + 33216812020.

It is an arithmetic number, because the mean of its divisors is an integer number (33216812020).

Almost surely, 2^66433624039 is an apocalyptic number.

66433624039 is a deficient number, since it is larger than the sum of its proper divisors (1).

66433624039 is an equidigital number, since it uses as much as digits as its factorization.

66433624039 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1679616, while the sum is 46.

The spelling of 66433624039 in words is "sixty-six billion, four hundred thirty-three million, six hundred twenty-four thousand, thirty-nine".