161606110566066 has 16 divisors (see below), whose sum is σ = 323263778428800. Its totient is φ = 53860110639248.

The previous prime is 161606110566049. The next prime is 161606110566083. The reversal of 161606110566066 is 660665011606161.

It is an interprime number because it is at equal distance from previous prime (161606110566049) and next prime (161606110566083).

It is a super-2 number, since 2×161606110566066² (a number of 29 digits) contains 22 as substring.

It is a Curzon 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, 2148179946 + ... + 2148255173.

It is an arithmetic number, because the mean of its divisors is an integer number (20203986151800).

Almost surely, 2^{161606110566066} is an apocalyptic number.

161606110566066 is an abundant number, since it is smaller than the sum of its proper divisors (161657667862734).

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

161606110566066 is a wasteful number, since it uses less digits than its factorization.

161606110566066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4296441393.

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

The spelling of 161606110566066 in words is "one hundred sixty-one trillion, six hundred six billion, one hundred ten million, five hundred sixty-six thousand, sixty-six".