66066000001 has 4 divisors (see below), whose sum is σ = 66141332692. Its totient is φ = 65990667312.

The previous prime is 66065999957. The next prime is 66066000031. The reversal of 66066000001 is 10000066066.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 10000066066 = 2 ⋅5000033033.

It can be written as a sum of positive squares in 2 ways, for example, as 53539018225 + 12526981776 = 231385^2 + 111924^2 .

It is a cyclic number.

It is not a de Polignac number, because 66066000001 - 2⁷ = 66065999873 is a prime.

It is a super-2 number, since 2×66066000001² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 66066000001.

It is not an unprimeable number, because it can be changed into a prime (66066000031) 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 3 ways as a sum of consecutive naturals, for example, 37665030 + ... + 37666783.

It is an arithmetic number, because the mean of its divisors is an integer number (16535333173).

Almost surely, 2^66066000001 is an apocalyptic number.

It is an amenable number.

66066000001 is a deficient number, since it is larger than the sum of its proper divisors (75332691).

66066000001 is an equidigital number, since it uses as much as digits as its factorization.

66066000001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75332690.

The product of its (nonzero) digits is 1296, while the sum is 25.

Adding to 66066000001 its reverse (10000066066), we get a palindrome (76066066067).

The spelling of 66066000001 in words is "sixty-six billion, sixty-six million, one", and thus it is an aban number and an uban number.