11994861773 has 2 divisors, whose sum is σ = 11994861774. Its totient is φ = 11994861772.

The previous prime is 11994861733. The next prime is 11994861797. The reversal of 11994861773 is 37716849911.

11994861773 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11974268329 + 20593444 = 109427^2 + 4538^2 .

It is a cyclic number.

It is not a de Polignac number, because 11994861773 - 2¹⁴ = 11994845389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11994861733) 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, 5997430886 + 5997430887.

It is an arithmetic number, because the mean of its divisors is an integer number (5997430887).

Almost surely, 2^11994861773 is an apocalyptic number.

It is an amenable number.

11994861773 is a deficient number, since it is larger than the sum of its proper divisors (1).

11994861773 is an equidigital number, since it uses as much as digits as its factorization.

11994861773 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2286144, while the sum is 56.

The spelling of 11994861773 in words is "eleven billion, nine hundred ninety-four million, eight hundred sixty-one thousand, seven hundred seventy-three".