171389433868 has 24 divisors (see below), whose sum is σ = 331382130912. Its totient is φ = 77147161344.

The previous prime is 171389433791. The next prime is 171389433877. The reversal of 171389433868 is 868334983171.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54790455 + ... + 54793582.

It is an arithmetic number, because the mean of its divisors is an integer number (13807588788).

Almost surely, 2^171389433868 is an apocalyptic number.

It is an amenable number.

171389433868 is a deficient number, since it is larger than the sum of its proper divisors (159992697044).

171389433868 is a wasteful number, since it uses less digits than its factorization.

171389433868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109584081 (or 109584079 counting only the distinct ones).

The product of its digits is 20901888, while the sum is 61.

The spelling of 171389433868 in words is "one hundred seventy-one billion, three hundred eighty-nine million, four hundred thirty-three thousand, eight hundred sixty-eight".