66033583619 has 2 divisors, whose sum is σ = 66033583620. Its totient is φ = 66033583618.

The previous prime is 66033583607. The next prime is 66033583723. The reversal of 66033583619 is 91638533066.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 66033583619 - 2²⁴ = 66016806403 is a prime.

It is a super-4 number, since 4×66033583619⁴ (a number of 44 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (66033583919) 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, 33016791809 + 33016791810.

It is an arithmetic number, because the mean of its divisors is an integer number (33016791810).

Almost surely, 2^66033583619 is an apocalyptic number.

66033583619 is a deficient number, since it is larger than the sum of its proper divisors (1).

66033583619 is an equidigital number, since it uses as much as digits as its factorization.

66033583619 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2099520, while the sum is 50.

The spelling of 66033583619 in words is "sixty-six billion, thirty-three million, five hundred eighty-three thousand, six hundred nineteen".