17172005538355 has 16 divisors (see below), whose sum is σ = 21045004606080. Its totient is φ = 13445210340352.

The previous prime is 17172005538353. The next prime is 17172005538407. The reversal of 17172005538355 is 55383550027171.

It is a cyclic number.

It is not a de Polignac number, because 17172005538355 - 2¹ = 17172005538353 is a prime.

It is a super-2 number, since 2×17172005538355² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (17172005538353) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45913467 + ... + 46285963.

It is an arithmetic number, because the mean of its divisors is an integer number (1315312787880).

Almost surely, 2^{17172005538355} is an apocalyptic number.

17172005538355 is a deficient number, since it is larger than the sum of its proper divisors (3872999067725).

17172005538355 is a wasteful number, since it uses less digits than its factorization.

17172005538355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 568718.

The product of its (nonzero) digits is 4410000, while the sum is 52.

The spelling of 17172005538355 in words is "seventeen trillion, one hundred seventy-two billion, five million, five hundred thirty-eight thousand, three hundred fifty-five".