13443520220240 has 40 divisors (see below), whose sum is σ = 34097655833568. Its totient is φ = 4888552807040.

The previous prime is 13443520220227. The next prime is 13443520220261. The reversal of 13443520220240 is 4202202534431.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 13443520220197 and 13443520220206.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7638362882 + ... + 7638364641.

Almost surely, 2^{13443520220240} is an apocalyptic number.

13443520220240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13443520220240 is an abundant number, since it is smaller than the sum of its proper divisors (20654135613328).

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

13443520220240 is a wasteful number, since it uses less digits than its factorization.

13443520220240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15276727547 (or 15276727541 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 32.

Adding to 13443520220240 its reverse (4202202534431), we get a palindrome (17645722754671).

The spelling of 13443520220240 in words is "thirteen trillion, four hundred forty-three billion, five hundred twenty million, two hundred twenty thousand, two hundred forty".