171119559556 has 27 divisors (see below), whose sum is σ = 329175171703. Its totient is φ = 77777481320.

The previous prime is 171119559539. The next prime is 171119559581. The reversal of 171119559556 is 655955911171.

The square root of 171119559556 is 413666.

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

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 171119559497 and 171119559506.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 9091251 + ... + 9110053.

Almost surely, 2^171119559556 is an apocalyptic number.

171119559556 is the 413666-th square number.

It is an amenable number.

171119559556 is a deficient number, since it is larger than the sum of its proper divisors (158055612147).

171119559556 is an frugal number, since it uses more digits than its factorization.

171119559556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37632 (or 18816 counting only the distinct ones).

The product of its digits is 2126250, while the sum is 55.

The spelling of 171119559556 in words is "one hundred seventy-one billion, one hundred nineteen million, five hundred fifty-nine thousand, five hundred fifty-six".