13215134545422 has 16 divisors (see below), whose sum is σ = 26506437017472. Its totient is φ = 4392350194040.

The previous prime is 13215134545397. The next prime is 13215134545423. The reversal of 13215134545422 is 22454543151231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13215134545423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3173661354 + ... + 3173665517.

It is an arithmetic number, because the mean of its divisors is an integer number (1656652313592).

Almost surely, 2^{13215134545422} is an apocalyptic number.

13215134545422 is an abundant number, since it is smaller than the sum of its proper divisors (13291302472050).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13215134545422 is a wasteful number, since it uses less digits than its factorization.

13215134545422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6347327223.

The product of its digits is 576000, while the sum is 42.

Adding to 13215134545422 its reverse (22454543151231), we get a palindrome (35669677696653).

The spelling of 13215134545422 in words is "thirteen trillion, two hundred fifteen billion, one hundred thirty-four million, five hundred forty-five thousand, four hundred twenty-two".