13530210215 has 4 divisors (see below), whose sum is σ = 16236252264. Its totient is φ = 10824168168.

The previous prime is 13530210181. The next prime is 13530210263. The reversal of 13530210215 is 51201203531.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 13530210215 - 2¹² = 13530206119 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 3 ways as a sum of consecutive naturals, for example, 1353021017 + ... + 1353021026.

It is an arithmetic number, because the mean of its divisors is an integer number (4059063066).

Almost surely, 2^13530210215 is an apocalyptic number.

13530210215 is a deficient number, since it is larger than the sum of its proper divisors (2706042049).

13530210215 is an equidigital number, since it uses as much as digits as its factorization.

13530210215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2706042048.

The product of its (nonzero) digits is 900, while the sum is 23.

Adding to 13530210215 its reverse (51201203531), we get a palindrome (64731413746).

The spelling of 13530210215 in words is "thirteen billion, five hundred thirty million, two hundred ten thousand, two hundred fifteen".