13885181420 has 144 divisors (see below), whose sum is σ = 33462162720. Its totient is φ = 4799308800.

The previous prime is 13885181369. The next prime is 13885181423. The reversal of 13885181420 is 2418158831.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13885181423) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 26650760 + ... + 26651280.

It is an arithmetic number, because the mean of its divisors is an integer number (232376130).

Almost surely, 2^13885181420 is an apocalyptic number.

13885181420 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 13885181420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16731081360).

13885181420 is an abundant number, since it is smaller than the sum of its proper divisors (19576981300).

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

13885181420 is a wasteful number, since it uses less digits than its factorization.

13885181420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 816 (or 791 counting only the distinct ones).

The product of its (nonzero) digits is 61440, while the sum is 41.

The spelling of 13885181420 in words is "thirteen billion, eight hundred eighty-five million, one hundred eighty-one thousand, four hundred twenty".