66243130613 has 8 divisors (see below), whose sum is σ = 72269703360. Its totient is φ = 60217302880.

The previous prime is 66243130609. The next prime is 66243130619. The reversal of 66243130613 is 31603134266.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 66243130613 - 2² = 66243130609 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66243130619) by changing a digit.

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, 8528 + ... + 364086.

It is an arithmetic number, because the mean of its divisors is an integer number (9033712920).

Almost surely, 2^66243130613 is an apocalyptic number.

It is an amenable number.

66243130613 is a deficient number, since it is larger than the sum of its proper divisors (6026572747).

66243130613 is a wasteful number, since it uses less digits than its factorization.

66243130613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 372507.

The product of its (nonzero) digits is 46656, while the sum is 35.

Adding to 66243130613 its reverse (31603134266), we get a palindrome (97846264879).

The spelling of 66243130613 in words is "sixty-six billion, two hundred forty-three million, one hundred thirty thousand, six hundred thirteen".