66066000007 has 4 divisors (see below), whose sum is σ = 75504000016. Its totient is φ = 56628000000.

The previous prime is 66065999957. The next prime is 66066000031. The reversal of 66066000007 is 70000066066.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66066000007 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66066000037) 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 in 3 ways as a sum of consecutive naturals, for example, 4718999994 + ... + 4719000007.

It is an arithmetic number, because the mean of its divisors is an integer number (18876000004).

Almost surely, 2^66066000007 is an apocalyptic number.

66066000007 is a deficient number, since it is larger than the sum of its proper divisors (9438000009).

66066000007 is an equidigital number, since it uses as much as digits as its factorization.

66066000007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9438000008.

The product of its (nonzero) digits is 9072, while the sum is 31.

The spelling of 66066000007 in words is "sixty-six billion, sixty-six million, seven", and thus it is an aban number and an uban number.