9861320803 has 4 divisors (see below), whose sum is σ = 9886160800. Its totient is φ = 9836480808.

The previous prime is 9861320783. The next prime is 9861320857. The reversal of 9861320803 is 3080231689.

9861320803 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 9861320803 - 2²¹ = 9859223651 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9861320893) by changing a digit.

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, 12419403 + ... + 12420196.

It is an arithmetic number, because the mean of its divisors is an integer number (2471540200).

Almost surely, 2^9861320803 is an apocalyptic number.

9861320803 is a deficient number, since it is larger than the sum of its proper divisors (24839997).

9861320803 is a wasteful number, since it uses less digits than its factorization.

9861320803 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24839996.

The product of its (nonzero) digits is 62208, while the sum is 40.

The square root of 9861320803 is about 99304.1832099736. The cubic root of 9861320803 is about 2144.4291185829.

The spelling of 9861320803 in words is "nine billion, eight hundred sixty-one million, three hundred twenty thousand, eight hundred three".