171859141940 has 48 divisors (see below), whose sum is σ = 368749584000. Its totient is φ = 67263073152.

The previous prime is 171859141939. The next prime is 171859141973. The reversal of 171859141940 is 49141958171.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 230720 + ... + 630039.

It is an arithmetic number, because the mean of its divisors is an integer number (7682283000).

Almost surely, 2^171859141940 is an apocalyptic number.

171859141940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

171859141940 is an abundant number, since it is smaller than the sum of its proper divisors (196890442060).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

171859141940 is a wasteful number, since it uses less digits than its factorization.

171859141940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 860984 (or 860982 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 50.

The spelling of 171859141940 in words is "one hundred seventy-one billion, eight hundred fifty-nine million, one hundred forty-one thousand, nine hundred forty".