12615224612135 has 4 divisors (see below), whose sum is σ = 15138269534568. Its totient is φ = 10092179689704.

The previous prime is 12615224612131. The next prime is 12615224612143. The reversal of 12615224612135 is 53121642251621.

It is a happy number.

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 12615224612135 - 2² = 12615224612131 is a prime.

It is a super-2 number, since 2×12615224612135² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12615224612092 and 12615224612101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12615224612131) 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, 1261522461209 + ... + 1261522461218.

It is an arithmetic number, because the mean of its divisors is an integer number (3784567383642).

Almost surely, 2^{12615224612135} is an apocalyptic number.

12615224612135 is a deficient number, since it is larger than the sum of its proper divisors (2523044922433).

12615224612135 is an equidigital number, since it uses as much as digits as its factorization.

12615224612135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2523044922432.

The product of its digits is 172800, while the sum is 41.

Adding to 12615224612135 its reverse (53121642251621), we get a palindrome (65736866863756).

The spelling of 12615224612135 in words is "twelve trillion, six hundred fifteen billion, two hundred twenty-four million, six hundred twelve thousand, one hundred thirty-five".