13352445131440 has 120 divisors (see below), whose sum is σ = 31797606564000. Its totient is φ = 5213485154304.

The previous prime is 13352445131381. The next prime is 13352445131461. The reversal of 13352445131440 is 4413154425331.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 13352445131393 and 13352445131402.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 54827061 + ... + 55070059.

It is an arithmetic number, because the mean of its divisors is an integer number (264980054700).

Almost surely, 2^{13352445131440} is an apocalyptic number.

13352445131440 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 13352445131440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15898803282000).

13352445131440 is an abundant number, since it is smaller than the sum of its proper divisors (18445161432560).

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

13352445131440 is an equidigital number, since it uses as much as digits as its factorization.

13352445131440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 243279 (or 243176 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 40.

Adding to 13352445131440 its reverse (4413154425331), we get a palindrome (17765599556771).

The spelling of 13352445131440 in words is "thirteen trillion, three hundred fifty-two billion, four hundred forty-five million, one hundred thirty-one thousand, four hundred forty".