13553355440 has 40 divisors (see below), whose sum is σ = 31517566080. Its totient is φ = 5420307456.

The previous prime is 13553355427. The next prime is 13553355457. The reversal of 13553355440 is 4455335531.

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 = 13553355394 and 13553355403.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 513281 + ... + 539039.

It is an arithmetic number, because the mean of its divisors is an integer number (787939152).

Almost surely, 2^13553355440 is an apocalyptic number.

13553355440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13553355440 is an abundant number, since it is smaller than the sum of its proper divisors (17964210640).

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

13553355440 is a wasteful number, since it uses less digits than its factorization.

13553355440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32349 (or 32343 counting only the distinct ones).

The product of its (nonzero) digits is 270000, while the sum is 38.

The spelling of 13553355440 in words is "thirteen billion, five hundred fifty-three million, three hundred fifty-five thousand, four hundred forty".