66606059019 has 8 divisors (see below), whose sum is σ = 91672855552. Its totient is φ = 42971650920.

The previous prime is 66606058979. The next prime is 66606059021. The reversal of 66606059019 is 91095060666.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 66606059019 - 2¹² = 66606054923 is a prime.

It is a super-3 number, since 3×66606059019³ (a number of 33 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66606059519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 358096999 + ... + 358097184.

It is an arithmetic number, because the mean of its divisors is an integer number (11459106944).

Almost surely, 2^66606059019 is an apocalyptic number.

66606059019 is a deficient number, since it is larger than the sum of its proper divisors (25066796533).

66606059019 is a wasteful number, since it uses less digits than its factorization.

66606059019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 716194217.

The product of its (nonzero) digits is 524880, while the sum is 48.

The spelling of 66606059019 in words is "sixty-six billion, six hundred six million, fifty-nine thousand, nineteen".