11941843009 has 2 divisors, whose sum is σ = 11941843010. Its totient is φ = 11941843008.

The previous prime is 11941842977. The next prime is 11941843019. The reversal of 11941843009 is 90034814911.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11055471025 + 886371984 = 105145^2 + 29772^2 .

It is a cyclic number.

It is not a de Polignac number, because 11941843009 - 2⁵ = 11941842977 is a prime.

It is a super-2 number, since 2×11941843009² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (11941843019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5970921504 + 5970921505.

It is an arithmetic number, because the mean of its divisors is an integer number (5970921505).

Almost surely, 2^11941843009 is an apocalyptic number.

It is an amenable number.

11941843009 is a deficient number, since it is larger than the sum of its proper divisors (1).

11941843009 is an equidigital number, since it uses as much as digits as its factorization.

11941843009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31104, while the sum is 40.

The spelling of 11941843009 in words is "eleven billion, nine hundred forty-one million, eight hundred forty-three thousand, nine".