13889244078720 has 384 divisors, whose sum is σ = 49748211152640. Its totient is φ = 3703011323904.

The previous prime is 13889244078719. The next prime is 13889244078733. The reversal of 13889244078720 is 2787044298831.

13889244078720 is a `hidden beast` number, since 1 + 3 + 8 + 8 + 92 + 440 + 7 + 87 + 20 = 666.

It is a tau number, because it is divible by the number of its divisors (384).

It is a super-2 number, since 2×13889244078720² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1341043782 + ... + 1341054138.

It is an arithmetic number, because the mean of its divisors is an integer number (129552633210).

Almost surely, 2^{13889244078720} is an apocalyptic number.

13889244078720 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 13889244078720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24874105576320).

13889244078720 is an abundant number, since it is smaller than the sum of its proper divisors (35858967073920).

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

13889244078720 is an equidigital number, since it uses as much as digits as its factorization.

13889244078720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19014 (or 18990 counting only the distinct ones).

The product of its (nonzero) digits is 43352064, while the sum is 63.

The spelling of 13889244078720 in words is "thirteen trillion, eight hundred eighty-nine billion, two hundred forty-four million, seventy-eight thousand, seven hundred twenty".