13530453421 has 8 divisors (see below), whose sum is σ = 13948277760. Its totient is φ = 13118912352.

The previous prime is 13530453361. The next prime is 13530453427. The reversal of 13530453421 is 12435403531.

13530453421 = T₂₃ + T₂₄ + ... + T₄₃₂₉.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13530453421 - 2¹¹ = 13530451373 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13530453427) by changing a digit.

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, 1566445 + ... + 1575058.

It is an arithmetic number, because the mean of its divisors is an integer number (1743534720).

Almost surely, 2^13530453421 is an apocalyptic number.

It is an amenable number.

13530453421 is a deficient number, since it is larger than the sum of its proper divisors (417824339).

13530453421 is an equidigital number, since it uses as much as digits as its factorization.

13530453421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3141635.

The product of its (nonzero) digits is 21600, while the sum is 31.

Adding to 13530453421 its reverse (12435403531), we get a palindrome (25965856952).

The spelling of 13530453421 in words is "thirteen billion, five hundred thirty million, four hundred fifty-three thousand, four hundred twenty-one".