13778441111 has 16 divisors (see below), whose sum is σ = 15153946560. Its totient is φ = 12484792320.

The previous prime is 13778441107. The next prime is 13778441143. The reversal of 13778441111 is 11114487731.

It is a happy number.

13778441111 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13778441111 - 2² = 13778441107 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13778411111) 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 15 ways as a sum of consecutive naturals, for example, 159530 + ... + 230231.

It is an arithmetic number, because the mean of its divisors is an integer number (947121660).

Almost surely, 2^13778441111 is an apocalyptic number.

13778441111 is a deficient number, since it is larger than the sum of its proper divisors (1375505449).

13778441111 is a wasteful number, since it uses less digits than its factorization.

13778441111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 389866.

The product of its digits is 18816, while the sum is 38.

The spelling of 13778441111 in words is "thirteen billion, seven hundred seventy-eight million, four hundred forty-one thousand, one hundred eleven".