9728067715739 has 4 divisors (see below), whose sum is σ = 9728105835240. Its totient is φ = 9728029596240.

The previous prime is 9728067715733. The next prime is 9728067715759. The reversal of 9728067715739 is 9375177608279.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9728067715739 is a prime.

It is a super-2 number, since 2×9728067715739² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9728067715733) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18674354 + ... + 19188215.

It is an arithmetic number, because the mean of its divisors is an integer number (2432026458810).

Almost surely, 2^{9728067715739} is an apocalyptic number.

9728067715739 is a deficient number, since it is larger than the sum of its proper divisors (38119501).

9728067715739 is a wasteful number, since it uses less digits than its factorization.

9728067715739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38119500.

The product of its (nonzero) digits is 280052640, while the sum is 71.

The spelling of 9728067715739 in words is "nine trillion, seven hundred twenty-eight billion, sixty-seven million, seven hundred fifteen thousand, seven hundred thirty-nine".