9802907321856 has 640 divisors, whose sum is σ = 31862100695040. Its totient is φ = 2639609856000.

The previous prime is 9802907321813. The next prime is 9802907321881. The reversal of 9802907321856 is 6581237092089.

It is a self number, because there is not a number n which added to its sum of digits gives 9802907321856.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1675421331 + ... + 1675427181.

It is an arithmetic number, because the mean of its divisors is an integer number (49784532336).

Almost surely, 2^{9802907321856} is an apocalyptic number.

9802907321856 is a gapful number since it is divisible by the number (96) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9802907321856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15931050347520).

9802907321856 is an abundant number, since it is smaller than the sum of its proper divisors (22059193373184).

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

9802907321856 is a wasteful number, since it uses less digits than its factorization.

9802907321856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6226 (or 6210 counting only the distinct ones).

The product of its (nonzero) digits is 13063680, while the sum is 60.

The spelling of 9802907321856 in words is "nine trillion, eight hundred two billion, nine hundred seven million, three hundred twenty-one thousand, eight hundred fifty-six".