66642652824188 has 24 divisors (see below), whose sum is σ = 133285508235264. Its totient is φ = 28561093513200.

The previous prime is 66642652824179. The next prime is 66642652824197. The reversal of 66642652824188 is 88142825624666.

66642652824188 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (66642652824179) and next prime (66642652824197).

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, 22829753 + ... + 25582863.

It is an arithmetic number, because the mean of its divisors is an integer number (5553562843136).

Almost surely, 2^{66642652824188} is an apocalyptic number.

It is an amenable number.

66642652824188 is an abundant number, since it is smaller than the sum of its proper divisors (66642855411076).

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

66642652824188 is a wasteful number, since it uses less digits than its factorization.

66642652824188 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3617633 (or 3617631 counting only the distinct ones).

The product of its digits is 424673280, while the sum is 68.

The spelling of 66642652824188 in words is "sixty-six trillion, six hundred forty-two billion, six hundred fifty-two million, eight hundred twenty-four thousand, one hundred eighty-eight".