161066117198 has 16 divisors (see below), whose sum is σ = 276131234304. Its totient is φ = 69023863320.

The previous prime is 161066117167. The next prime is 161066117209. The reversal of 161066117198 is 891711660161.

It is a Curzon number.

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, 144098 + ... + 585573.

It is an arithmetic number, because the mean of its divisors is an integer number (17258202144).

Almost surely, 2^161066117198 is an apocalyptic number.

161066117198 is a deficient number, since it is larger than the sum of its proper divisors (115065117106).

161066117198 is a wasteful number, since it uses less digits than its factorization.

161066117198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 745447.

The product of its (nonzero) digits is 108864, while the sum is 47.

The spelling of 161066117198 in words is "one hundred sixty-one billion, sixty-six million, one hundred seventeen thousand, one hundred ninety-eight".