13425784668 has 120 divisors (see below), whose sum is σ = 37479953280. Its totient is φ = 4181466240.

The previous prime is 13425784649. The next prime is 13425784709. The reversal of 13425784668 is 86648752431.

It is a happy number.

13425784668 is a `hidden beast` number, since 1 + 3 + 4 + 2 + 578 + 4 + 6 + 68 = 666.

13425784668 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 (54).

It is a congruent number.

It is an unprimeable number.

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 39 ways as a sum of consecutive naturals, for example, 268230 + ... + 314322.

It is an arithmetic number, because the mean of its divisors is an integer number (312332944).

Almost surely, 2^13425784668 is an apocalyptic number.

13425784668 is a gapful number since it is divisible by the number (18) 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 13425784668, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18739976640).

13425784668 is an abundant number, since it is smaller than the sum of its proper divisors (24054168612).

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

13425784668 is a wasteful number, since it uses less digits than its factorization.

13425784668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46169 (or 46158 counting only the distinct ones).

The product of its digits is 7741440, while the sum is 54.

The spelling of 13425784668 in words is "thirteen billion, four hundred twenty-five million, seven hundred eighty-four thousand, six hundred sixty-eight".