11781383439 has 8 divisors (see below), whose sum is σ = 17952584320. Its totient is φ = 6732219096.

The previous prime is 11781383407. The next prime is 11781383477. The reversal of 11781383439 is 93438318711.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11781383439 - 2⁵ = 11781383407 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11781383479) 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 in 7 ways as a sum of consecutive naturals, for example, 280509109 + ... + 280509150.

It is an arithmetic number, because the mean of its divisors is an integer number (2244073040).

Almost surely, 2^11781383439 is an apocalyptic number.

11781383439 is a deficient number, since it is larger than the sum of its proper divisors (6171200881).

11781383439 is an equidigital number, since it uses as much as digits as its factorization.

11781383439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 561018269.

The product of its digits is 435456, while the sum is 48.

The spelling of 11781383439 in words is "eleven billion, seven hundred eighty-one million, three hundred eighty-three thousand, four hundred thirty-nine".