66066066000056 has 128 divisors (see below), whose sum is σ = 137789993376000. Its totient is φ = 29582431718400.

The previous prime is 66066066000019. The next prime is 66066066000059. The reversal of 66066066000056 is 65000066066066.

It is a super-3 number, since 3×66066066000056³ (a number of 42 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66066066000059) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 24173255 + ... + 26767113.

It is an arithmetic number, because the mean of its divisors is an integer number (1076484323250).

Almost surely, 2^{66066066000056} is an apocalyptic number.

It is an amenable number.

66066066000056 is an abundant number, since it is smaller than the sum of its proper divisors (71723927375944).

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

66066066000056 is a wasteful number, since it uses less digits than its factorization.

66066066000056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2594053 (or 2594049 counting only the distinct ones).

The product of its (nonzero) digits is 1399680, while the sum is 47.

The spelling of 66066066000056 in words is "sixty-six trillion, sixty-six billion, sixty-six million, fifty-six", and thus it is an aban number, an eban number, and an uban number.