6600728688911 has 8 divisors (see below), whose sum is σ = 7543883141760. Its totient is φ = 5657622538968.

The previous prime is 6600728688893. The next prime is 6600728688949. The reversal of 6600728688911 is 1198868270066.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6600728688911 is a prime.

It is a super-2 number, since 2×6600728688911² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6600728688971) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 11782421 + ... + 12329918.

It is an arithmetic number, because the mean of its divisors is an integer number (942985392720).

Almost surely, 2^{6600728688911} is an apocalyptic number.

6600728688911 is a deficient number, since it is larger than the sum of its proper divisors (943154452849).

6600728688911 is a wasteful number, since it uses less digits than its factorization.

6600728688911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24151453.

The product of its (nonzero) digits is 13934592, while the sum is 62.

The spelling of 6600728688911 in words is "six trillion, six hundred billion, seven hundred twenty-eight million, six hundred eighty-eight thousand, nine hundred eleven".