9809321056504 has 64 divisors (see below), whose sum is σ = 19822134024000. Its totient is φ = 4539843449856.

The previous prime is 9809321056421. The next prime is 9809321056511. The reversal of 9809321056504 is 4056501239089.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6177679 + ... + 7601470.

It is an arithmetic number, because the mean of its divisors is an integer number (309720844125).

Almost surely, 2^{9809321056504} is an apocalyptic number.

It is an amenable number.

9809321056504 is an abundant number, since it is smaller than the sum of its proper divisors (10012812967496).

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

9809321056504 is a wasteful number, since it uses less digits than its factorization.

9809321056504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13779304 (or 13779300 counting only the distinct ones).

The product of its (nonzero) digits is 2332800, while the sum is 52.

The spelling of 9809321056504 in words is "nine trillion, eight hundred nine billion, three hundred twenty-one million, fifty-six thousand, five hundred four".