17070853992721 has 9 divisors (see below), whose sum is σ = 17329726698249. Its totient is φ = 16815792435684.

The previous prime is 17070853992719. The next prime is 17070853992763. The reversal of 17070853992721 is 12729935807071.

The square root of 17070853992721 is 4131689.

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

It is not a de Polignac number, because 17070853992721 - 2¹ = 17070853992719 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 17070853992721.

It is not an unprimeable number, because it can be changed into a prime (17070853992791) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 276792330 + ... + 276853996.

Almost surely, 2^{17070853992721} is an apocalyptic number.

17070853992721 is the 4131689-th square number.

17070853992721 is the 2065845-th centered octagonal number.

It is an amenable number.

17070853992721 is a deficient number, since it is larger than the sum of its proper divisors (258872705528).

17070853992721 is an frugal number, since it uses more digits than its factorization.

17070853992721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123468 (or 61734 counting only the distinct ones).

The product of its (nonzero) digits is 13335840, while the sum is 61.

The spelling of 17070853992721 in words is "seventeen trillion, seventy billion, eight hundred fifty-three million, nine hundred ninety-two thousand, seven hundred twenty-one".