13443341540 has 12 divisors (see below), whose sum is σ = 28231017276. Its totient is φ = 5377336608.

The previous prime is 13443341533. The next prime is 13443341543. The reversal of 13443341540 is 4514334431.

It can be written as a sum of positive squares in 2 ways, for example, as 7212765184 + 6230576356 = 84928^2 + 78934^2 .

It is a super-2 number, since 2×13443341540² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 13443341497 and 13443341506.

It is not an unprimeable number, because it can be changed into a prime (13443341543) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 336083519 + ... + 336083558.

It is an arithmetic number, because the mean of its divisors is an integer number (2352584773).

Almost surely, 2^13443341540 is an apocalyptic number.

13443341540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13443341540 is an abundant number, since it is smaller than the sum of its proper divisors (14787675736).

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

13443341540 is a wasteful number, since it uses less digits than its factorization.

13443341540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 672167086 (or 672167084 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 32.

Adding to 13443341540 its reverse (4514334431), we get a palindrome (17957675971).

The spelling of 13443341540 in words is "thirteen billion, four hundred forty-three million, three hundred forty-one thousand, five hundred forty".