17172755216 has 10 divisors (see below), whose sum is σ = 33272213262. Its totient is φ = 8586377600.

The previous prime is 17172755191. The next prime is 17172755221. The reversal of 17172755216 is 61255727171.

It can be written as a sum of positive squares in only one way, i.e., 12297922816 + 4874832400 = 110896^2 + 69820^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 536648585 + ... + 536648616.

Almost surely, 2^17172755216 is an apocalyptic number.

17172755216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

17172755216 is a deficient number, since it is larger than the sum of its proper divisors (16099458046).

17172755216 is a wasteful number, since it uses less digits than its factorization.

17172755216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1073297209 (or 1073297203 counting only the distinct ones).

The product of its digits is 205800, while the sum is 44.

The spelling of 17172755216 in words is "seventeen billion, one hundred seventy-two million, seven hundred fifty-five thousand, two hundred sixteen".