66608835200 has 96 divisors (see below), whose sum is σ = 164658968220. Its totient is φ = 26625024000.

The previous prime is 66608835127. The next prime is 66608835329. The reversal of 66608835200 is 253880666.

It can be written as a sum of positive squares in 6 ways, for example, as 32247539776 + 34361295424 = 179576^2 + 185368^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5180780 + ... + 5193620.

Almost surely, 2^66608835200 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 66608835200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (82329484110).

66608835200 is an abundant number, since it is smaller than the sum of its proper divisors (98050133020).

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

66608835200 is a wasteful number, since it uses less digits than its factorization.

66608835200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14486 (or 14469 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 44.

The spelling of 66608835200 in words is "sixty-six billion, six hundred eight million, eight hundred thirty-five thousand, two hundred".