13530221404 has 24 divisors (see below), whose sum is σ = 28484677760. Its totient is φ = 5493473136.

The previous prime is 13530221389. The next prime is 13530221413. The reversal of 13530221404 is 40412203531.

It is a congruent number.

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, 12715842 + ... + 12716905.

Almost surely, 2^13530221404 is an apocalyptic number.

13530221404 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

13530221404 is an abundant number, since it is smaller than the sum of its proper divisors (14954456356).

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

13530221404 is a wasteful number, since it uses less digits than its factorization.

13530221404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25432777 (or 25432775 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 25.

Adding to 13530221404 its reverse (40412203531), we get a palindrome (53942424935).

The spelling of 13530221404 in words is "thirteen billion, five hundred thirty million, two hundred twenty-one thousand, four hundred four".