66385562852 has 12 divisors (see below), whose sum is σ = 132771125760. Its totient is φ = 28450955496.

The previous prime is 66385562843. The next prime is 66385562909. The reversal of 66385562852 is 25826558366.

66385562852 is an admirable number.

It is a hoax number, since the sum of its digits (56) coincides with the sum of the digits of its distinct prime factors.

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, 1185456452 + ... + 1185456507.

It is an arithmetic number, because the mean of its divisors is an integer number (11064260480).

Almost surely, 2^66385562852 is an apocalyptic number.

It is an amenable number.

66385562852 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.

66385562852 is a wasteful number, since it uses less digits than its factorization.

66385562852 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2370912970 (or 2370912968 counting only the distinct ones).

The product of its digits is 20736000, while the sum is 56.

The spelling of 66385562852 in words is "sixty-six billion, three hundred eighty-five million, five hundred sixty-two thousand, eight hundred fifty-two".