66066906639992 has 16 divisors (see below), whose sum is σ = 123994675615200. Its totient is φ = 33001659809280.

The previous prime is 66066906639991. The next prime is 66066906640057. The reversal of 66066906639992 is 29993660966066.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66066906639991) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3974180009 + ... + 3974196632.

It is an arithmetic number, because the mean of its divisors is an integer number (7749667225950).

Almost surely, 2^{66066906639992} is an apocalyptic number.

It is an amenable number.

66066906639992 is a deficient number, since it is larger than the sum of its proper divisors (57927768975208).

66066906639992 is a wasteful number, since it uses less digits than its factorization.

66066906639992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7948377686 (or 7948377682 counting only the distinct ones).

The product of its (nonzero) digits is 1836660096, while the sum is 77.

The spelling of 66066906639992 in words is "sixty-six trillion, sixty-six billion, nine hundred six million, six hundred thirty-nine thousand, nine hundred ninety-two".