13340255440 has 20 divisors (see below), whose sum is σ = 31016094084. Its totient is φ = 5336102144.

The previous prime is 13340255417. The next prime is 13340255477. The reversal of 13340255440 is 4455204331.

It can be written as a sum of positive squares in 2 ways, for example, as 7462886544 + 5877368896 = 86388^2 + 76664^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 83376517 + ... + 83376676.

Almost surely, 2^13340255440 is an apocalyptic number.

13340255440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13340255440 is an abundant number, since it is smaller than the sum of its proper divisors (17675838644).

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

13340255440 is a wasteful number, since it uses less digits than its factorization.

13340255440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166753206 (or 166753200 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 31.

Adding to 13340255440 its reverse (4455204331), we get a palindrome (17795459771).

The spelling of 13340255440 in words is "thirteen billion, three hundred forty million, two hundred fifty-five thousand, four hundred forty".