13788991788 has 384 divisors, whose sum is σ = 41699266560. Its totient is φ = 3481927680.

The previous prime is 13788991757. The next prime is 13788991789. The reversal of 13788991788 is 88719988731.

13788991788 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (13788991789) 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 127 ways as a sum of consecutive naturals, for example, 122026420 + ... + 122026532.

It is an arithmetic number, because the mean of its divisors is an integer number (108591840).

Almost surely, 2^13788991788 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13788991788, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20849633280).

13788991788 is an abundant number, since it is smaller than the sum of its proper divisors (27910274772).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13788991788 is a wasteful number, since it uses less digits than its factorization.

13788991788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 297 (or 295 counting only the distinct ones).

The product of its digits is 48771072, while the sum is 69.

The spelling of 13788991788 in words is "thirteen billion, seven hundred eighty-eight million, nine hundred ninety-one thousand, seven hundred eighty-eight".