161606061615994 has 8 divisors (see below), whose sum is σ = 242409768759648. Its totient is φ = 80802805362780.

The previous prime is 161606061615983. The next prime is 161606061615997. The reversal of 161606061615994 is 499516160606161.

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

It is a super-3 number, since 3×161606061615994³ (a number of 44 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (161606061615997) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 111825142 + ... + 113261089.

It is an arithmetic number, because the mean of its divisors is an integer number (30301221094956).

Almost surely, 2^{161606061615994} is an apocalyptic number.

161606061615994 is a deficient number, since it is larger than the sum of its proper divisors (80803707143654).

161606061615994 is a wasteful number, since it uses less digits than its factorization.

161606061615994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225445220.

The product of its (nonzero) digits is 12597120, while the sum is 61.

The spelling of 161606061615994 in words is "one hundred sixty-one trillion, six hundred six billion, sixty-one million, six hundred fifteen thousand, nine hundred ninety-four".