66188724338 has 8 divisors (see below), whose sum is σ = 108308821680. Its totient is φ = 30085783780.

The previous prime is 66188724313. The next prime is 66188724353. The reversal of 66188724338 is 83342788166.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1504289168 + ... + 1504289211.

It is an arithmetic number, because the mean of its divisors is an integer number (13538602710).

Almost surely, 2^66188724338 is an apocalyptic number.

66188724338 is a deficient number, since it is larger than the sum of its proper divisors (42120097342).

66188724338 is a wasteful number, since it uses less digits than its factorization.

66188724338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3008578392.

The product of its digits is 9289728, while the sum is 56.

The spelling of 66188724338 in words is "sixty-six billion, one hundred eighty-eight million, seven hundred twenty-four thousand, three hundred thirty-eight".