13135215502 has 4 divisors (see below), whose sum is σ = 19702823256. Its totient is φ = 6567607750.

The previous prime is 13135215481. The next prime is 13135215517. The reversal of 13135215502 is 20551253131.

It is a semiprime because it is the product of two primes.

It is a super-3 number, since 3×13135215502³ (a number of 31 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3283803874 + ... + 3283803877.

It is an arithmetic number, because the mean of its divisors is an integer number (4925705814).

Almost surely, 2^13135215502 is an apocalyptic number.

13135215502 is a deficient number, since it is larger than the sum of its proper divisors (6567607754).

13135215502 is an equidigital number, since it uses as much as digits as its factorization.

13135215502 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6567607753.

The product of its (nonzero) digits is 4500, while the sum is 28.

Adding to 13135215502 its reverse (20551253131), we get a palindrome (33686468633).

The spelling of 13135215502 in words is "thirteen billion, one hundred thirty-five million, two hundred fifteen thousand, five hundred two".