161327656 has 16 divisors (see below), whose sum is σ = 345702240. Its totient is φ = 69140400.

The previous prime is 161327633. The next prime is 161327687. The reversal of 161327656 is 656723161.

161327656 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×161327656² = 52053225180908672, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1440370 + ... + 1440481.

It is an arithmetic number, because the mean of its divisors is an integer number (21606390).

Almost surely, 2^161327656 is an apocalyptic number.

It is an amenable number.

161327656 is an abundant number, since it is smaller than the sum of its proper divisors (184374584).

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

161327656 is a wasteful number, since it uses less digits than its factorization.

161327656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2880864 (or 2880860 counting only the distinct ones).

The product of its digits is 45360, while the sum is 37.

The square root of 161327656 is about 12701.4824331650. The cubic root of 161327656 is about 544.3809777223.

The spelling of 161327656 in words is "one hundred sixty-one million, three hundred twenty-seven thousand, six hundred fifty-six".