11986985443 has 2 divisors, whose sum is σ = 11986985444. Its totient is φ = 11986985442.

The previous prime is 11986985441. The next prime is 11986985471. The reversal of 11986985443 is 34458968911.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11986985443 - 2¹ = 11986985441 is a prime.

Together with 11986985441, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (11986985441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5993492721 + 5993492722.

It is an arithmetic number, because the mean of its divisors is an integer number (5993492722).

Almost surely, 2^11986985443 is an apocalyptic number.

11986985443 is a deficient number, since it is larger than the sum of its proper divisors (1).

11986985443 is an equidigital number, since it uses as much as digits as its factorization.

11986985443 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7464960, while the sum is 58.

The spelling of 11986985443 in words is "eleven billion, nine hundred eighty-six million, nine hundred eighty-five thousand, four hundred forty-three".