171134380803556 has 27 divisors (see below), whose sum is σ = 304649968395171. Its totient is φ = 84116140292664.

The previous prime is 171134380803517. The next prime is 171134380803563. The reversal of 171134380803556 is 655308083431171.

The square root of 171134380803556 is 13081834.

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 = 171134380803497 and 171134380803506.

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, 1543600981 + ... + 1543711843.

Almost surely, 2^{171134380803556} is an apocalyptic number.

171134380803556 is the 13081834-th square number.

It is an amenable number.

171134380803556 is a deficient number, since it is larger than the sum of its proper divisors (133515587591615).

171134380803556 is an frugal number, since it uses more digits than its factorization.

171134380803556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221848 (or 110924 counting only the distinct ones).

The product of its (nonzero) digits is 7257600, while the sum is 55.

The spelling of 171134380803556 in words is "one hundred seventy-one trillion, one hundred thirty-four billion, three hundred eighty million, eight hundred three thousand, five hundred fifty-six".