13253252218 has 4 divisors (see below), whose sum is σ = 19879878330. Its totient is φ = 6626626108.

The previous prime is 13253252161. The next prime is 13253252237. The reversal of 13253252218 is 81225235231.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 81225235231 = 7 ⋅11603605033.

It can be written as a sum of positive squares in only one way, i.e., 9573252649 + 3679999569 = 97843^2 + 60663^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3313313053 + ... + 3313313056.

Almost surely, 2^13253252218 is an apocalyptic number.

13253252218 is a deficient number, since it is larger than the sum of its proper divisors (6626626112).

13253252218 is an equidigital number, since it uses as much as digits as its factorization.

13253252218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6626626111.

The product of its digits is 28800, while the sum is 34.

Adding to 13253252218 its reverse (81225235231), we get a palindrome (94478487449).

The spelling of 13253252218 in words is "thirteen billion, two hundred fifty-three million, two hundred fifty-two thousand, two hundred eighteen".