171761890460 has 48 divisors (see below), whose sum is σ = 363115655616. Its totient is φ = 68244913152.

The previous prime is 171761890453. The next prime is 171761890513. The reversal of 171761890460 is 64098167171.

It is a junction number, because it is equal to n+sod(n) for n = 171761890399 and 171761890408.

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, 12374084 + ... + 12387956.

It is an arithmetic number, because the mean of its divisors is an integer number (7564909492).

Almost surely, 2^171761890460 is an apocalyptic number.

171761890460 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

171761890460 is an abundant number, since it is smaller than the sum of its proper divisors (191353765156).

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

171761890460 is a wasteful number, since it uses less digits than its factorization.

171761890460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17982 (or 17980 counting only the distinct ones).

The product of its (nonzero) digits is 508032, while the sum is 50.

The spelling of 171761890460 in words is "one hundred seventy-one billion, seven hundred sixty-one million, eight hundred ninety thousand, four hundred sixty".