11778939113 has 4 divisors (see below), whose sum is σ = 11808313428. Its totient is φ = 11749564800.

The previous prime is 11778939089. The next prime is 11778939157. The reversal of 11778939113 is 31193987711.

11778939113 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 11621486809 + 157452304 = 107803^2 + 12548^2 .

It is a cyclic number.

It is not a de Polignac number, because 11778939113 - 2¹⁸ = 11778676969 is a prime.

It is a super-2 number, since 2×11778939113² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11778938113) 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 in 3 ways as a sum of consecutive naturals, for example, 14686556 + ... + 14687357.

It is an arithmetic number, because the mean of its divisors is an integer number (2952078357).

Almost surely, 2^11778939113 is an apocalyptic number.

It is an amenable number.

11778939113 is a deficient number, since it is larger than the sum of its proper divisors (29374315).

11778939113 is an equidigital number, since it uses as much as digits as its factorization.

11778939113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29374314.

The product of its digits is 285768, while the sum is 50.

The spelling of 11778939113 in words is "eleven billion, seven hundred seventy-eight million, nine hundred thirty-nine thousand, one hundred thirteen".