171345953930 has 24 divisors (see below), whose sum is σ = 319424732172. Its totient is φ = 66174985856.

The previous prime is 171345953929. The next prime is 171345953951. The reversal of 171345953930 is 39359543171.

It can be written as a sum of positive squares in 6 ways, for example, as 88062343009 + 83283610921 = 296753^2 + 288589^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10178627 + ... + 10195446.

Almost surely, 2^171345953930 is an apocalyptic number.

171345953930 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

171345953930 is a deficient number, since it is larger than the sum of its proper divisors (148078778242).

171345953930 is a wasteful number, since it uses less digits than its factorization.

171345953930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20374138 (or 20374109 counting only the distinct ones).

The product of its (nonzero) digits is 1530900, while the sum is 50.

The spelling of 171345953930 in words is "one hundred seventy-one billion, three hundred forty-five million, nine hundred fifty-three thousand, nine hundred thirty".