9981264611 has 2 divisors, whose sum is σ = 9981264612. Its totient is φ = 9981264610.

The previous prime is 9981264581. The next prime is 9981264613. The reversal of 9981264611 is 1164621899.

9981264611 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9981264611 is a prime.

Together with 9981264613, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (9981264613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4990632305 + 4990632306.

It is an arithmetic number, because the mean of its divisors is an integer number (4990632306).

Almost surely, 2^9981264611 is an apocalyptic number.

9981264611 is a deficient number, since it is larger than the sum of its proper divisors (1).

9981264611 is an equidigital number, since it uses as much as digits as its factorization.

9981264611 is an evil number, because the sum of its binary digits is even.

The product of its digits is 186624, while the sum is 47.

The square root of 9981264611 is about 99906.2791369992. The cubic root of 9981264611 is about 2153.0883764915.

The spelling of 9981264611 in words is "nine billion, nine hundred eighty-one million, two hundred sixty-four thousand, six hundred eleven".