13156322216 has 32 divisors (see below), whose sum is σ = 25253721000. Its totient is φ = 6423782400.

The previous prime is 13156322177. The next prime is 13156322233. The reversal of 13156322216 is 61222365131.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 13029309316 + 127012900 = 114146^2 + 11270^2 .

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, 52541 + ... + 170508.

Almost surely, 2^13156322216 is an apocalyptic number.

It is an amenable number.

13156322216 is a deficient number, since it is larger than the sum of its proper divisors (12097398784).

13156322216 is a wasteful number, since it uses less digits than its factorization.

13156322216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223229 (or 223225 counting only the distinct ones).

The product of its digits is 12960, while the sum is 32.

Adding to 13156322216 its reverse (61222365131), we get a palindrome (74378687347).

The spelling of 13156322216 in words is "thirteen billion, one hundred fifty-six million, three hundred twenty-two thousand, two hundred sixteen".