171516909316 has 9 divisors (see below), whose sum is σ = 300156040821. Its totient is φ = 85758040512.

The previous prime is 171516909259. The next prime is 171516909331. The reversal of 171516909316 is 613909615171.

The square root of 171516909316 is 414146.

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

It can be written as a sum of positive squares in only one way, i.e., 110456522500 + 61060386816 = 332350^2 + 247104^2 .

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 171516909316.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 724756 + ... + 931828.

Almost surely, 2^171516909316 is an apocalyptic number.

171516909316 is the 414146-th square number.

It is an amenable number.

171516909316 is a deficient number, since it is larger than the sum of its proper divisors (128639131505).

171516909316 is an frugal number, since it uses more digits than its factorization.

171516909316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 414150 (or 207075 counting only the distinct ones).

The product of its (nonzero) digits is 306180, while the sum is 49.

Multiplying 171516909316 by its sum of digits (49), we get a square (8404328556484 = 2899022²).

The spelling of 171516909316 in words is "one hundred seventy-one billion, five hundred sixteen million, nine hundred nine thousand, three hundred sixteen".