13145345215 has 4 divisors (see below), whose sum is σ = 15774414264. Its totient is φ = 10516276168.

The previous prime is 13145345203. The next prime is 13145345219. The reversal of 13145345215 is 51254354131.

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 13145345215 - 2¹⁷ = 13145214143 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 (13145345219) 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, 1314534517 + ... + 1314534526.

It is an arithmetic number, because the mean of its divisors is an integer number (3943603566).

Almost surely, 2^13145345215 is an apocalyptic number.

13145345215 is a deficient number, since it is larger than the sum of its proper divisors (2629069049).

13145345215 is an equidigital number, since it uses as much as digits as its factorization.

13145345215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2629069048.

The product of its digits is 36000, while the sum is 34.

Adding to 13145345215 its reverse (51254354131), we get a palindrome (64399699346).

The spelling of 13145345215 in words is "thirteen billion, one hundred forty-five million, three hundred forty-five thousand, two hundred fifteen".