13855134720 has 176 divisors, whose sum is σ = 50645858688. Its totient is φ = 3166863360.

The previous prime is 13855134679. The next prime is 13855134751. The reversal of 13855134720 is 2743155831.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43090 + ... + 171950.

Almost surely, 2^13855134720 is an apocalyptic number.

13855134720 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 13855134720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25322929344).

13855134720 is an abundant number, since it is smaller than the sum of its proper divisors (36790723968).

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

13855134720 is a wasteful number, since it uses less digits than its factorization.

13855134720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128896 (or 128878 counting only the distinct ones).

The product of its (nonzero) digits is 100800, while the sum is 39.

The spelling of 13855134720 in words is "thirteen billion, eight hundred fifty-five million, one hundred thirty-four thousand, seven hundred twenty".