13603878720 has 672 divisors, whose sum is σ = 52841932416. Its totient is φ = 3317760000.

The previous prime is 13603878667. The next prime is 13603878727. The reversal of 13603878720 is 2787830631.

13603878720 is a `hidden beast` number, since 13 + 603 + 8 + 7 + 8 + 7 + 20 = 666.

13603878720 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13603878727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 54198595 + ... + 54198845.

It is an arithmetic number, because the mean of its divisors is an integer number (78633828).

Almost surely, 2^13603878720 is an apocalyptic number.

13603878720 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 13603878720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26420966208).

13603878720 is an abundant number, since it is smaller than the sum of its proper divisors (39238053696).

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

13603878720 is a wasteful number, since it uses less digits than its factorization.

13603878720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 341 (or 319 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 45.

The spelling of 13603878720 in words is "thirteen billion, six hundred three million, eight hundred seventy-eight thousand, seven hundred twenty".