161606051056166 has 8 divisors (see below), whose sum is σ = 242502634707264. Its totient is φ = 80771839487080.

The previous prime is 161606051056103. The next prime is 161606051056169. The reversal of 161606051056166 is 661650150606161.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×161606051056166² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161606051056169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15593014025 + ... + 15593024388.

It is an arithmetic number, because the mean of its divisors is an integer number (30312829338408).

Almost surely, 2^{161606051056166} is an apocalyptic number.

161606051056166 is a deficient number, since it is larger than the sum of its proper divisors (80896583651098).

161606051056166 is a wasteful number, since it uses less digits than its factorization.

161606051056166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31186041006.

The product of its (nonzero) digits is 1166400, while the sum is 50.

The spelling of 161606051056166 in words is "one hundred sixty-one trillion, six hundred six billion, fifty-one million, fifty-six thousand, one hundred sixty-six".