13135316602 has 4 divisors (see below), whose sum is σ = 19702974906. Its totient is φ = 6567658300.

The previous prime is 13135316573. The next prime is 13135316633. The reversal of 13135316602 is 20661353131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 20661353131 = 5483 ⋅3768257.

It can be written as a sum of positive squares in only one way, i.e., 9446090481 + 3689226121 = 97191^2 + 60739^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3283829149 + ... + 3283829152.

Almost surely, 2^13135316602 is an apocalyptic number.

13135316602 is a deficient number, since it is larger than the sum of its proper divisors (6567658304).

13135316602 is an equidigital number, since it uses as much as digits as its factorization.

13135316602 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6567658303.

The product of its (nonzero) digits is 9720, while the sum is 31.

Adding to 13135316602 its reverse (20661353131), we get a palindrome (33796669733).

The spelling of 13135316602 in words is "thirteen billion, one hundred thirty-five million, three hundred sixteen thousand, six hundred two".