66813468148 has 12 divisors (see below), whose sum is σ = 133626936352. Its totient is φ = 28634343480.

The previous prime is 66813468083. The next prime is 66813468151. The reversal of 66813468148 is 84186431866.

66813468148 is an admirable number.

It is a hoax number, since the sum of its digits (55) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1193097618 + ... + 1193097673.

Almost surely, 2^66813468148 is an apocalyptic number.

It is an amenable number.

66813468148 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

66813468148 is a wasteful number, since it uses less digits than its factorization.

66813468148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2386195302 (or 2386195300 counting only the distinct ones).

The product of its digits is 5308416, while the sum is 55.

The spelling of 66813468148 in words is "sixty-six billion, eight hundred thirteen million, four hundred sixty-eight thousand, one hundred forty-eight".