66884908104 has 192 divisors, whose sum is σ = 208923287040. Its totient is φ = 18935562240.

The previous prime is 66884908091. The next prime is 66884908121. The reversal of 66884908104 is 40180948866.

66884908104 is a `hidden beast` number, since 66 + 88 + 490 + 8 + 10 + 4 = 666.

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 47 ways as a sum of consecutive naturals, for example, 27332209 + ... + 27334655.

It is an arithmetic number, because the mean of its divisors is an integer number (1088142120).

Almost surely, 2^66884908104 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66884908104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (104461643520).

66884908104 is an abundant number, since it is smaller than the sum of its proper divisors (142038378936).

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

66884908104 is a wasteful number, since it uses less digits than its factorization.

66884908104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2940 (or 2933 counting only the distinct ones).

The product of its (nonzero) digits is 2654208, while the sum is 54.

The spelling of 66884908104 in words is "sixty-six billion, eight hundred eighty-four million, nine hundred eight thousand, one hundred four".