66468052852 has 6 divisors (see below), whose sum is σ = 116319092498. Its totient is φ = 33234026424.

The previous prime is 66468052823. The next prime is 66468052873. The reversal of 66468052852 is 25825086466.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 43298951056 + 23169101796 = 208084^2 + 152214^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 66468052852.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8308506603 + ... + 8308506610.

Almost surely, 2^66468052852 is an apocalyptic number.

It is an amenable number.

66468052852 is a deficient number, since it is larger than the sum of its proper divisors (49851039646).

66468052852 is a wasteful number, since it uses less digits than its factorization.

66468052852 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16617013217 (or 16617013215 counting only the distinct ones).

The product of its (nonzero) digits is 5529600, while the sum is 52.

The spelling of 66468052852 in words is "sixty-six billion, four hundred sixty-eight million, fifty-two thousand, eight hundred fifty-two".