9811117273 has 2 divisors, whose sum is σ = 9811117274. Its totient is φ = 9811117272.

The previous prime is 9811117249. The next prime is 9811117289. The reversal of 9811117273 is 3727111189.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7272166729 + 2538950544 = 85277^2 + 50388^2 .

It is an emirp because it is prime and its reverse (3727111189) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9811117273 - 2¹³ = 9811109081 is a prime.

It is not a weakly prime, because it can be changed into another prime (9811117213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4905558636 + 4905558637.

It is an arithmetic number, because the mean of its divisors is an integer number (4905558637).

Almost surely, 2^9811117273 is an apocalyptic number.

It is an amenable number.

9811117273 is a deficient number, since it is larger than the sum of its proper divisors (1).

9811117273 is an equidigital number, since it uses as much as digits as its factorization.

9811117273 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 21168, while the sum is 40.

The square root of 9811117273 is about 99051.0841586300. The cubic root of 9811117273 is about 2140.7838623324.

The spelling of 9811117273 in words is "nine billion, eight hundred eleven million, one hundred seventeen thousand, two hundred seventy-three".