66066066000000 has 672 divisors, whose sum is σ = 259241076984240. Its totient is φ = 16015968000000.

The previous prime is 66066065999953. The next prime is 66066066000017. The reversal of 66066066000000 is 66066066.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a super Niven number, because it is divisible the sum of any subset of its (nonzero) digits.

It is an unprimeable number.

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 83 ways as a sum of consecutive naturals, for example, 197833167 + ... + 198166833.

Almost surely, 2^{66066066000000} is an apocalyptic number.

66066066000000 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66066066000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (129620538492120).

66066066000000 is an abundant number, since it is smaller than the sum of its proper divisors (193175010984240).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66066066000000 is an equidigital number, since it uses as much as digits as its factorization.

66066066000000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333728 (or 333688 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 36.

66066066000000 divided by its reverse (66066066) gives a 6-th power (1000000 = 10⁶).

It can be divided in two parts, 6606 and 6066000000, that added together give a palindrome (6066006606).

The spelling of 66066066000000 in words is "sixty-six trillion, sixty-six billion, sixty-six million", and thus it is an aban number, an eban number, and an uban number.