66066000080 has 40 divisors (see below), whose sum is σ = 153652240032. Its totient is φ = 26418006144.

The previous prime is 66066000079. The next prime is 66066000089. The reversal of 66066000080 is 8000066066.

It is a happy number.

66066000080 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66066000089) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 125399 + ... + 384521.

Almost surely, 2^66066000080 is an apocalyptic number.

It is an amenable number.

66066000080 is an abundant number, since it is smaller than the sum of its proper divisors (87586239952).

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

66066000080 is a wasteful number, since it uses less digits than its factorization.

66066000080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 262323 (or 262317 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 32.

The spelling of 66066000080 in words is "sixty-six billion, sixty-six million, eighty", and thus it is an aban number and an uban number.