66105343356 has 24 divisors (see below), whose sum is σ = 166110863184. Its totient is φ = 20340105600.

The previous prime is 66105343351. The next prime is 66105343357. The reversal of 66105343356 is 65334350166.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66105343351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 211875945 + ... + 211876256.

It is an arithmetic number, because the mean of its divisors is an integer number (6921285966).

Almost surely, 2^66105343356 is an apocalyptic number.

It is an amenable number.

66105343356 is an abundant number, since it is smaller than the sum of its proper divisors (100005519828).

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

66105343356 is a wasteful number, since it uses less digits than its factorization.

66105343356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 423752221 (or 423752219 counting only the distinct ones).

The product of its (nonzero) digits is 583200, while the sum is 42.

The spelling of 66105343356 in words is "sixty-six billion, one hundred five million, three hundred forty-three thousand, three hundred fifty-six".