11943456139 has 2 divisors, whose sum is σ = 11943456140. Its totient is φ = 11943456138.

The previous prime is 11943456121. The next prime is 11943456163. The reversal of 11943456139 is 93165434911.

It is a weak prime.

It is an emirp because it is prime and its reverse (93165434911) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11943456139 - 2⁷ = 11943456011 is a prime.

It is a super-2 number, since 2×11943456139² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (11943456179) 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, 5971728069 + 5971728070.

It is an arithmetic number, because the mean of its divisors is an integer number (5971728070).

Almost surely, 2^11943456139 is an apocalyptic number.

11943456139 is a deficient number, since it is larger than the sum of its proper divisors (1).

11943456139 is an equidigital number, since it uses as much as digits as its factorization.

11943456139 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 349920, while the sum is 46.

The spelling of 11943456139 in words is "eleven billion, nine hundred forty-three million, four hundred fifty-six thousand, one hundred thirty-nine".