9818752723728 has 120 divisors (see below), whose sum is σ = 28555576201152. Its totient is φ = 2889800035584.

The previous prime is 9818752723669. The next prime is 9818752723753. The reversal of 9818752723728 is 8273272578189.

It is a Harshad number since it is a multiple of its sum of digits (69).

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 23 ways as a sum of consecutive naturals, for example, 14542476 + ... + 15202667.

Almost surely, 2^{9818752723728} is an apocalyptic number.

It is an amenable number.

9818752723728 is an abundant number, since it is smaller than the sum of its proper divisors (18736823477424).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9818752723728 is a wasteful number, since it uses less digits than its factorization.

9818752723728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29745213 (or 29745184 counting only the distinct ones).

The product of its digits is 189665280, while the sum is 69.

The spelling of 9818752723728 in words is "nine trillion, eight hundred eighteen billion, seven hundred fifty-two million, seven hundred twenty-three thousand, seven hundred twenty-eight".