66350550553628 has 72 divisors (see below), whose sum is σ = 127941275401632. Its totient is φ = 30085549648000.

The previous prime is 66350550553591. The next prime is 66350550553633. The reversal of 66350550553628 is 82635505505366.

It is a happy number.

66350550553628 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 840468638 + ... + 840547578.

It is an arithmetic number, because the mean of its divisors is an integer number (1776962158356).

Almost surely, 2^{66350550553628} is an apocalyptic number.

It is an amenable number.

66350550553628 is a deficient number, since it is larger than the sum of its proper divisors (61590724848004).

66350550553628 is a wasteful number, since it uses less digits than its factorization.

66350550553628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83195 (or 83182 counting only the distinct ones).

The product of its (nonzero) digits is 97200000, while the sum is 59.

The spelling of 66350550553628 in words is "sixty-six trillion, three hundred fifty billion, five hundred fifty million, five hundred fifty-three thousand, six hundred twenty-eight".