13888723055616 has 308 divisors, whose sum is σ = 41656366670724. Its totient is φ = 4626284544000.

The previous prime is 13888723055609. The next prime is 13888723055699. The reversal of 13888723055616 is 61655032788831.

13888723055616 is a `hidden beast` number, since 1 + 3 + 8 + 8 + 8 + 7 + 2 + 3 + 0 + 5 + 5 + 616 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 8503056000000 + 5385667055616 = 2916000^2 + 2320704^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 1195134286 + ... + 1195145906.

Almost surely, 2^{13888723055616} is an apocalyptic number.

13888723055616 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 13888723055616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20828183335362).

13888723055616 is an abundant number, since it is smaller than the sum of its proper divisors (27767643615108).

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

13888723055616 is an equidigital number, since it uses as much as digits as its factorization.

13888723055616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13260 (or 13227 counting only the distinct ones).

The product of its (nonzero) digits is 58060800, while the sum is 63.

The spelling of 13888723055616 in words is "thirteen trillion, eight hundred eighty-eight billion, seven hundred twenty-three million, fifty-five thousand, six hundred sixteen".