11181678439 has 2 divisors, whose sum is σ = 11181678440. Its totient is φ = 11181678438.

The previous prime is 11181678377. The next prime is 11181678457. The reversal of 11181678439 is 93487618111.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11181678439 - 2¹¹ = 11181676391 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11181678392 and 11181678401.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11181678839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5590839219 + 5590839220.

It is an arithmetic number, because the mean of its divisors is an integer number (5590839220).

Almost surely, 2^11181678439 is an apocalyptic number.

11181678439 is a deficient number, since it is larger than the sum of its proper divisors (1).

11181678439 is an equidigital number, since it uses as much as digits as its factorization.

11181678439 is an evil number, because the sum of its binary digits is even.

The product of its digits is 290304, while the sum is 49.

The spelling of 11181678439 in words is "eleven billion, one hundred eighty-one million, six hundred seventy-eight thousand, four hundred thirty-nine".