66353373606 has 64 divisors (see below), whose sum is σ = 147910666176. Its totient is φ = 19713024000.

The previous prime is 66353373571. The next prime is 66353373649. The reversal of 66353373606 is 60637335366.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 203256 + ... + 417156.

It is an arithmetic number, because the mean of its divisors is an integer number (2311104159).

Almost surely, 2^66353373606 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66353373606, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73955333088).

66353373606 is an abundant number, since it is smaller than the sum of its proper divisors (81557292570).

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

66353373606 is a wasteful number, since it uses less digits than its factorization.

66353373606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214057.

The product of its (nonzero) digits is 3674160, while the sum is 48.

The spelling of 66353373606 in words is "sixty-six billion, three hundred fifty-three million, three hundred seventy-three thousand, six hundred six".