12135315245 has 8 divisors (see below), whose sum is σ = 14636300184. Its totient is φ = 9658970944.

The previous prime is 12135315163. The next prime is 12135315251. The reversal of 12135315245 is 54251353121.

It can be written as a sum of positive squares in 4 ways, for example, as 1131515044 + 11003800201 = 33638^2 + 104899^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12135315245 - 2²² = 12131120941 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6159074 + ... + 6161043.

It is an arithmetic number, because the mean of its divisors is an integer number (1829537523).

Almost surely, 2^12135315245 is an apocalyptic number.

It is an amenable number.

12135315245 is a deficient number, since it is larger than the sum of its proper divisors (2500984939).

12135315245 is a wasteful number, since it uses less digits than its factorization.

12135315245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12320319.

The product of its digits is 18000, while the sum is 32.

Adding to 12135315245 its reverse (54251353121), we get a palindrome (66386668366).

The spelling of 12135315245 in words is "twelve billion, one hundred thirty-five million, three hundred fifteen thousand, two hundred forty-five".