9911806233473 has 2 divisors, whose sum is σ = 9911806233474. Its totient is φ = 9911806233472.

The previous prime is 9911806233457. The next prime is 9911806233533. The reversal of 9911806233473 is 3743326081199.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6347839938064 + 3563966295409 = 2519492^2 + 1887847^2 .

It is an emirp because it is prime and its reverse (3743326081199) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9911806233473 - 2⁴ = 9911806233457 is a prime.

It is not a weakly prime, because it can be changed into another prime (9911806233773) 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, 4955903116736 + 4955903116737.

It is an arithmetic number, because the mean of its divisors is an integer number (4955903116737).

Almost surely, 2^{9911806233473} is an apocalyptic number.

It is an amenable number.

9911806233473 is a deficient number, since it is larger than the sum of its proper divisors (1).

9911806233473 is an equidigital number, since it uses as much as digits as its factorization.

9911806233473 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5878656, while the sum is 56.

The spelling of 9911806233473 in words is "nine trillion, nine hundred eleven billion, eight hundred six million, two hundred thirty-three thousand, four hundred seventy-three".