15728447716 has 12 divisors (see below), whose sum is σ = 28196119980. Its totient is φ = 7672413440.

The previous prime is 15728447701. The next prime is 15728447729. The reversal of 15728447716 is 61774482751.

It is a happy number.

15728447716 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 2318807716 + 13409640000 = 48154^2 + 115800^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47952421 + ... + 47952748.

It is an arithmetic number, because the mean of its divisors is an integer number (2349676665).

Almost surely, 2^15728447716 is an apocalyptic number.

It is an amenable number.

15728447716 is a deficient number, since it is larger than the sum of its proper divisors (12467672264).

15728447716 is a wasteful number, since it uses less digits than its factorization.

15728447716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95905214 (or 95905212 counting only the distinct ones).

The product of its digits is 2634240, while the sum is 52.

The spelling of 15728447716 in words is "fifteen billion, seven hundred twenty-eight million, four hundred forty-seven thousand, seven hundred sixteen".