13397840352 has 144 divisors (see below), whose sum is σ = 43444674000. Its totient is φ = 3879899136.

The previous prime is 13397840333. The next prime is 13397840353. The reversal of 13397840352 is 25304879331.

13397840352 is a `hidden beast` number, since 133 + 97 + 84 + 0 + 352 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a junction number, because it is equal to n+sod(n) for n = 13397840298 and 13397840307.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13397840353) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 41602 + ... + 168897.

It is an arithmetic number, because the mean of its divisors is an integer number (301699125).

Almost surely, 2^13397840352 is an apocalyptic number.

13397840352 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

13397840352 is an abundant number, since it is smaller than the sum of its proper divisors (30046833648).

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

13397840352 is a wasteful number, since it uses less digits than its factorization.

13397840352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210545 (or 210534 counting only the distinct ones).

The product of its (nonzero) digits is 544320, while the sum is 45.

The spelling of 13397840352 in words is "thirteen billion, three hundred ninety-seven million, eight hundred forty thousand, three hundred fifty-two".