66065361031606 has 4 divisors (see below), whose sum is σ = 99098041547412. Its totient is φ = 33032680515802.

The previous prime is 66065361031577. The next prime is 66065361031619. The reversal of 66065361031606 is 60613016356066.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 66065361031606.

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 as a sum of consecutive naturals, namely, 16516340257900 + ... + 16516340257903.

It is an arithmetic number, because the mean of its divisors is an integer number (24774510386853).

Almost surely, 2^{66065361031606} is an apocalyptic number.

66065361031606 is a deficient number, since it is larger than the sum of its proper divisors (33032680515806).

66065361031606 is a wasteful number, since it uses less digits than its factorization.

66065361031606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33032680515805.

The product of its (nonzero) digits is 2099520, while the sum is 49.

The spelling of 66065361031606 in words is "sixty-six trillion, sixty-five billion, three hundred sixty-one million, thirty-one thousand, six hundred six".