13168552320 has 640 divisors, whose sum is σ = 58649184000. Its totient is φ = 2735493120.

The previous prime is 13168552307. The next prime is 13168552343. The reversal of 13168552320 is 2325586131.

13168552320 is a `hidden beast` number, since 1 + 31 + 6 + 85 + 523 + 20 = 666.

It is a tau number, because it is divible by the number of its divisors (640).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 3990031 + ... + 3993329.

It is an arithmetic number, because the mean of its divisors is an integer number (91639350).

Almost surely, 2^13168552320 is an apocalyptic number.

13168552320 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 13168552320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29324592000).

13168552320 is an abundant number, since it is smaller than the sum of its proper divisors (45480631680).

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

13168552320 is a wasteful number, since it uses less digits than its factorization.

13168552320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3348 (or 3327 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

The spelling of 13168552320 in words is "thirteen billion, one hundred sixty-eight million, five hundred fifty-two thousand, three hundred twenty".