161606061616056 has 32 divisors (see below), whose sum is σ = 404015867039760. Its totient is φ = 53868592138752.

The previous prime is 161606061616033. The next prime is 161606061616157. The reversal of 161606061616056 is 650616160606161.

It is a super-2 number, since 2×161606061616056² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8674866 + ... + 19961598.

Almost surely, 2^{161606061616056} is an apocalyptic number.

It is an amenable number.

161606061616056 is an abundant number, since it is smaller than the sum of its proper divisors (242409805423704).

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

161606061616056 is a wasteful number, since it uses less digits than its factorization.

161606061616056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11883335 (or 11883331 counting only the distinct ones).

The product of its (nonzero) digits is 1399680, while the sum is 51.

The spelling of 161606061616056 in words is "one hundred sixty-one trillion, six hundred six billion, sixty-one million, six hundred sixteen thousand, fifty-six".