171243961343 has 32 divisors (see below), whose sum is σ = 217628393472. Its totient is φ = 131078217600.

The previous prime is 171243961289. The next prime is 171243961351. The reversal of 171243961343 is 343169342171.

It is not a de Polignac number, because 171243961343 - 2²⁰ = 171242912767 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 171243961294 and 171243961303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (171243961373) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11538938 + ... + 11553768.

It is an arithmetic number, because the mean of its divisors is an integer number (6800887296).

Almost surely, 2^171243961343 is an apocalyptic number.

171243961343 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

171243961343 is a deficient number, since it is larger than the sum of its proper divisors (46384432129).

171243961343 is a wasteful number, since it uses less digits than its factorization.

171243961343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18975.

The product of its digits is 326592, while the sum is 44.

The spelling of 171243961343 in words is "one hundred seventy-one billion, two hundred forty-three million, nine hundred sixty-one thousand, three hundred forty-three".