13215245515013 has 4 divisors (see below), whose sum is σ = 13215336609888. Its totient is φ = 13215154420140.

The previous prime is 13215245514997. The next prime is 13215245515019. The reversal of 13215245515013 is 31051554251231.

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.

It is a cyclic number.

It is not a de Polignac number, because 13215245515013 - 2⁴ = 13215245514997 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 (13215245515019) 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, 45329483 + ... + 45620088.

It is an arithmetic number, because the mean of its divisors is an integer number (3303834152472).

Almost surely, 2^{13215245515013} is an apocalyptic number.

It is an amenable number.

13215245515013 is a deficient number, since it is larger than the sum of its proper divisors (91094875).

13215245515013 is an equidigital number, since it uses as much as digits as its factorization.

13215245515013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91094874.

The product of its (nonzero) digits is 90000, while the sum is 38.

Adding to 13215245515013 its reverse (31051554251231), we get a palindrome (44266799766244).

The spelling of 13215245515013 in words is "thirteen trillion, two hundred fifteen billion, two hundred forty-five million, five hundred fifteen thousand, thirteen".