66050165600 has 72 divisors (see below), whose sum is σ = 163888447968. Its totient is φ = 25986931200.

The previous prime is 66050165591. The next prime is 66050165611. The reversal of 66050165600 is 656105066.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 627944 + ... + 725543.

It is an arithmetic number, because the mean of its divisors is an integer number (2276228444).

Almost surely, 2^66050165600 is an apocalyptic number.

It is an amenable number.

66050165600 is an abundant number, since it is smaller than the sum of its proper divisors (97838282368).

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

66050165600 is a wasteful number, since it uses less digits than its factorization.

66050165600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1353568 (or 1353555 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 35.

The spelling of 66050165600 in words is "sixty-six billion, fifty million, one hundred sixty-five thousand, six hundred".