13530221405 has 16 divisors (see below), whose sum is σ = 16786205184. Its totient is φ = 10458642240.

The previous prime is 13530221389. The next prime is 13530221413. The reversal of 13530221405 is 50412203531.

It is a happy number.

It is not a de Polignac number, because 13530221405 - 2⁴ = 13530221389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31787 + ... + 167543.

It is an arithmetic number, because the mean of its divisors is an integer number (1049137824).

Almost surely, 2^13530221405 is an apocalyptic number.

It is an amenable number.

13530221405 is a deficient number, since it is larger than the sum of its proper divisors (3255983779).

13530221405 is a wasteful number, since it uses less digits than its factorization.

13530221405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136436.

The product of its (nonzero) digits is 3600, while the sum is 26.

Adding to 13530221405 its reverse (50412203531), we get a palindrome (63942424936).

The spelling of 13530221405 in words is "thirteen billion, five hundred thirty million, two hundred twenty-one thousand, four hundred five".