162171204883920 has 120 divisors (see below), whose sum is σ = 545816703701256. Its totient is φ = 43151025106944.

The previous prime is 162171204883901. The next prime is 162171204883949. The reversal of 162171204883920 is 29388402171261.

162171204883920 is a `hidden beast` number, since 1 + 6 + 2 + 1 + 7 + 120 + 488 + 39 + 2 + 0 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 73608575247936 + 88562629635984 = 8579544^2 + 9410772^2 .

It is a tau number, because it is divible by the number of its divisors (120).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 246101797 + ... + 246759876.

Almost surely, 2^{162171204883920} is an apocalyptic number.

162171204883920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

162171204883920 is an abundant number, since it is smaller than the sum of its proper divisors (383645498817336).

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

162171204883920 is a wasteful number, since it uses less digits than its factorization.

162171204883920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 492862149 (or 492862140 counting only the distinct ones).

The product of its (nonzero) digits is 2322432, while the sum is 54.

The spelling of 162171204883920 in words is "one hundred sixty-two trillion, one hundred seventy-one billion, two hundred four million, eight hundred eighty-three thousand, nine hundred twenty".