171218250668 has 12 divisors (see below), whose sum is σ = 317257346952. Its totient is φ = 80573294400.

The previous prime is 171218250631. The next prime is 171218250677. The reversal of 171218250668 is 866052812171.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1258957658 + ... + 1258957793.

It is an arithmetic number, because the mean of its divisors is an integer number (26438112246).

Almost surely, 2^171218250668 is an apocalyptic number.

It is an amenable number.

171218250668 is a deficient number, since it is larger than the sum of its proper divisors (146039096284).

171218250668 is a wasteful number, since it uses less digits than its factorization.

171218250668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2517915472 (or 2517915470 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 47.

The spelling of 171218250668 in words is "one hundred seventy-one billion, two hundred eighteen million, two hundred fifty thousand, six hundred sixty-eight".