161606661150616 has 16 divisors (see below), whose sum is σ = 330559079626440. Its totient is φ = 73457573250240.

The previous prime is 161606661150607. The next prime is 161606661150647. The reversal of 161606661150616 is 616051166606161.

It is a super-2 number, since 2×161606661150616² (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 3 ways as a sum of consecutive naturals, for example, 918219665541 + ... + 918219665716.

Almost surely, 2^{161606661150616} is an apocalyptic number.

It is an amenable number.

161606661150616 is an abundant number, since it is smaller than the sum of its proper divisors (168952418475824).

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

161606661150616 is a wasteful number, since it uses less digits than its factorization.

161606661150616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1836439331274 (or 1836439331270 counting only the distinct ones).

The product of its (nonzero) digits is 1399680, while the sum is 52.

The spelling of 161606661150616 in words is "one hundred sixty-one trillion, six hundred six billion, six hundred sixty-one million, one hundred fifty thousand, six hundred sixteen".