13215386653 has 4 divisors (see below), whose sum is σ = 15103299040. Its totient is φ = 11327474268.

The previous prime is 13215386651. The next prime is 13215386669. The reversal of 13215386653 is 35668351231.

It is a happy number.

13215386653 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 35668351231 = 7309 ⋅4880059.

It is a cyclic number.

It is not a de Polignac number, because 13215386653 - 2¹ = 13215386651 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 (13215386651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 943956183 + ... + 943956196.

It is an arithmetic number, because the mean of its divisors is an integer number (3775824760).

Almost surely, 2^13215386653 is an apocalyptic number.

It is an amenable number.

13215386653 is a deficient number, since it is larger than the sum of its proper divisors (1887912387).

13215386653 is an equidigital number, since it uses as much as digits as its factorization.

13215386653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1887912386.

The product of its digits is 388800, while the sum is 43.

The spelling of 13215386653 in words is "thirteen billion, two hundred fifteen million, three hundred eighty-six thousand, six hundred fifty-three".