9821117263 has 2 divisors, whose sum is σ = 9821117264. Its totient is φ = 9821117262.

The previous prime is 9821117261. The next prime is 9821117297. The reversal of 9821117263 is 3627111289.

9821117263 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 9821117263 - 2¹ = 9821117261 is a prime.

It is a super-2 number, since 2×9821117263² (a number of 21 digits) contains 22 as substring.

Together with 9821117261, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9821117261) 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 as a sum of consecutive naturals, namely, 4910558631 + 4910558632.

It is an arithmetic number, because the mean of its divisors is an integer number (4910558632).

Almost surely, 2^9821117263 is an apocalyptic number.

9821117263 is a deficient number, since it is larger than the sum of its proper divisors (1).

9821117263 is an equidigital number, since it uses as much as digits as its factorization.

9821117263 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 36288, while the sum is 40.

The square root of 9821117263 is about 99101.5502552811. The cubic root of 9821117263 is about 2141.5109473124.

The spelling of 9821117263 in words is "nine billion, eight hundred twenty-one million, one hundred seventeen thousand, two hundred sixty-three".