17271222209956 has 135 divisors (see below), whose sum is σ = 36028350603315. Its totient is φ = 7241180918400.

The previous prime is 17271222209881. The next prime is 17271222209977. The reversal of 17271222209956 is 65990222217271.

The square root of 17271222209956 is 4155866.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 242526700900 + 17028695509056 = 492470^2 + 4126584^2 .

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 17271222209897 and 17271222209906.

It is an unprimeable number.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 13074353776 + ... + 13074355096.

Almost surely, 2^{17271222209956} is an apocalyptic number.

17271222209956 is the 4155866-th square number.

It is an amenable number.

17271222209956 is an abundant number, since it is smaller than the sum of its proper divisors (18757128393359).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

17271222209956 is an frugal number, since it uses more digits than its factorization.

17271222209956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2716 (or 1347 counting only the distinct ones).

The product of its (nonzero) digits is 3810240, while the sum is 55.

The spelling of 17271222209956 in words is "seventeen trillion, two hundred seventy-one billion, two hundred twenty-two million, two hundred nine thousand, nine hundred fifty-six".