161606056560166 has 16 divisors (see below), whose sum is σ = 242769571794288. Its totient is φ = 80682925528800.

The previous prime is 161606056560149. The next prime is 161606056560173. The reversal of 161606056560166 is 661065650606161.

161606056560166 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×161606056560166² (a number of 29 digits) contains 22 as substring.

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, 9462880 + ... + 20316451.

It is an arithmetic number, because the mean of its divisors is an integer number (15173098237143).

Almost surely, 2^{161606056560166} is an apocalyptic number.

161606056560166 is a deficient number, since it is larger than the sum of its proper divisors (81163515234122).

161606056560166 is a wasteful number, since it uses less digits than its factorization.

161606056560166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29783367.

The product of its (nonzero) digits is 6998400, while the sum is 55.

The spelling of 161606056560166 in words is "one hundred sixty-one trillion, six hundred six billion, fifty-six million, five hundred sixty thousand, one hundred sixty-six".