171545660540 has 24 divisors (see below), whose sum is σ = 375908752800. Its totient is φ = 65634861248.

The previous prime is 171545660513. The next prime is 171545660579. The reversal of 171545660540 is 45066545171.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 171545660491 and 171545660500.

It is a congruent number.

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, 186462215 + ... + 186463134.

It is an arithmetic number, because the mean of its divisors is an integer number (15662864700).

Almost surely, 2^171545660540 is an apocalyptic number.

171545660540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

171545660540 is an abundant number, since it is smaller than the sum of its proper divisors (204363092260).

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

171545660540 is a wasteful number, since it uses less digits than its factorization.

171545660540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 372925381 (or 372925379 counting only the distinct ones).

The product of its (nonzero) digits is 504000, while the sum is 44.

The spelling of 171545660540 in words is "one hundred seventy-one billion, five hundred forty-five million, six hundred sixty thousand, five hundred forty".