13135412512 has 24 divisors (see below), whose sum is σ = 25863043500. Its totient is φ = 6567020544.

The previous prime is 13135412503. The next prime is 13135412527. The reversal of 13135412512 is 21521453131.

It can be written as a sum of positive squares in 2 ways, for example, as 11074615696 + 2060796816 = 105236^2 + 45396^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 448164 + ... + 476572.

Almost surely, 2^13135412512 is an apocalyptic number.

It is an amenable number.

13135412512 is a deficient number, since it is larger than the sum of its proper divisors (12727630988).

13135412512 is a wasteful number, since it uses less digits than its factorization.

13135412512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42868 (or 42860 counting only the distinct ones).

The product of its digits is 3600, while the sum is 28.

Adding to 13135412512 its reverse (21521453131), we get a palindrome (34656865643).

The spelling of 13135412512 in words is "thirteen billion, one hundred thirty-five million, four hundred twelve thousand, five hundred twelve".