13888887500 has 72 divisors (see below), whose sum is σ = 30513672000. Its totient is φ = 5531120000.

The previous prime is 13888887487. The next prime is 13888887521. The reversal of 13888887500 is 578888831.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2985176 + ... + 2989824.

It is an arithmetic number, because the mean of its divisors is an integer number (423801000).

Almost surely, 2^13888887500 is an apocalyptic number.

13888887500 is a gapful number since it is divisible by the number (10) 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 13888887500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15256836000).

13888887500 is an abundant number, since it is smaller than the sum of its proper divisors (16624784500).

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

13888887500 is an equidigital number, since it uses as much as digits as its factorization.

13888887500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4917 (or 4895 counting only the distinct ones).

The product of its (nonzero) digits is 3440640, while the sum is 56.

It can be divided in two parts, 1388 and 8887500, that added together give a palindrome (8888888).

The spelling of 13888887500 in words is "thirteen billion, eight hundred eighty-eight million, eight hundred eighty-seven thousand, five hundred".