66000188244 has 24 divisors (see below), whose sum is σ = 154851275488. Its totient is φ = 21878514720.

The previous prime is 66000188201. The next prime is 66000188251. The reversal of 66000188244 is 44288100066.

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 7 ways as a sum of consecutive naturals, for example, 15191242 + ... + 15195585.

Almost surely, 2^66000188244 is an apocalyptic number.

It is an amenable number.

66000188244 is an abundant number, since it is smaller than the sum of its proper divisors (88851087244).

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

66000188244 is a wasteful number, since it uses less digits than its factorization.

66000188244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30387015 (or 30387013 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 39.

The spelling of 66000188244 in words is "sixty-six billion, one hundred eighty-eight thousand, two hundred forty-four".