13215430509 has 4 divisors (see below), whose sum is σ = 17620574016. Its totient is φ = 8810287004.

The previous prime is 13215430483. The next prime is 13215430511. The reversal of 13215430509 is 90503451231.

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: 90503451231 = 3 ⋅30167817077.

It is a cyclic number.

It is not a de Polignac number, because 13215430509 - 2⁷ = 13215430381 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13215430509.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13215435509) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2202571749 + ... + 2202571754.

It is an arithmetic number, because the mean of its divisors is an integer number (4405143504).

Almost surely, 2^13215430509 is an apocalyptic number.

It is an amenable number.

13215430509 is a deficient number, since it is larger than the sum of its proper divisors (4405143507).

13215430509 is an equidigital number, since it uses as much as digits as its factorization.

13215430509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4405143506.

The product of its (nonzero) digits is 16200, while the sum is 33.

The spelling of 13215430509 in words is "thirteen billion, two hundred fifteen million, four hundred thirty thousand, five hundred nine".