13788626656 has 144 divisors (see below), whose sum is σ = 32306072400. Its totient is φ = 5774899200.

The previous prime is 13788626641. The next prime is 13788626659. The reversal of 13788626656 is 65662688731.

It is a self number, because there is not a number n which added to its sum of digits gives 13788626656.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13788626659) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13144020 + ... + 13145068.

It is an arithmetic number, because the mean of its divisors is an integer number (224347725).

Almost surely, 2^13788626656 is an apocalyptic number.

13788626656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13788626656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16153036200).

13788626656 is an abundant number, since it is smaller than the sum of its proper divisors (18517445744).

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

13788626656 is a wasteful number, since it uses less digits than its factorization.

13788626656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1257 (or 1242 counting only the distinct ones).

The product of its digits is 17418240, while the sum is 58.

The spelling of 13788626656 in words is "thirteen billion, seven hundred eighty-eight million, six hundred twenty-six thousand, six hundred fifty-six".