13888845544 has 64 divisors (see below), whose sum is σ = 31102156800. Its totient is φ = 5690188224.

The previous prime is 13888845539. The next prime is 13888845559. The reversal of 13888845544 is 44554888831.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51817 + ... + 174535.

It is an arithmetic number, because the mean of its divisors is an integer number (485971200).

Almost surely, 2^13888845544 is an apocalyptic number.

13888845544 is a gapful number since it is divisible by the number (14) 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 13888845544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15551078400).

13888845544 is an abundant number, since it is smaller than the sum of its proper divisors (17213311256).

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

13888845544 is a wasteful number, since it uses less digits than its factorization.

13888845544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122822 (or 122818 counting only the distinct ones).

The product of its digits is 19660800, while the sum is 58.

The spelling of 13888845544 in words is "thirteen billion, eight hundred eighty-eight million, eight hundred forty-five thousand, five hundred forty-four".