11728276685 has 8 divisors (see below), whose sum is σ = 14080707576. Its totient is φ = 9378104320.

The previous prime is 11728276669. The next prime is 11728276697. The reversal of 11728276685 is 58667282711.

It can be written as a sum of positive squares in 4 ways, for example, as 411359524 + 11316917161 = 20282^2 + 106381^2 .

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

It is not a de Polignac number, because 11728276685 - 2⁴ = 11728276669 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 553184 + ... + 573993.

It is an arithmetic number, because the mean of its divisors is an integer number (1760088447).

Almost surely, 2^11728276685 is an apocalyptic number.

It is an amenable number.

11728276685 is a deficient number, since it is larger than the sum of its proper divisors (2352430891).

11728276685 is a wasteful number, since it uses less digits than its factorization.

11728276685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1129263.

The product of its digits is 2257920, while the sum is 53.

The spelling of 11728276685 in words is "eleven billion, seven hundred twenty-eight million, two hundred seventy-six thousand, six hundred eighty-five".