6728332316505 has 32 divisors (see below), whose sum is σ = 11056489611264. Its totient is φ = 3491394829056.

The previous prime is 6728332316449. The next prime is 6728332316513. The reversal of 6728332316505 is 5056132338276.

It is not a de Polignac number, because 6728332316505 - 2¹⁷ = 6728332185433 is a prime.

It is a super-2 number, since 2×6728332316505² (a number of 26 digits) contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 52712872 + ... + 52840358.

It is an arithmetic number, because the mean of its divisors is an integer number (345515300352).

Almost surely, 2^{6728332316505} is an apocalyptic number.

It is an amenable number.

6728332316505 is a deficient number, since it is larger than the sum of its proper divisors (4328157294759).

6728332316505 is a wasteful number, since it uses less digits than its factorization.

6728332316505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222625.

The product of its (nonzero) digits is 5443200, while the sum is 51.

It can be divided in two parts, 6728 and 332316505, that added together give a palindrome (332323233).

The spelling of 6728332316505 in words is "six trillion, seven hundred twenty-eight billion, three hundred thirty-two million, three hundred sixteen thousand, five hundred five".