161606061616012 has 24 divisors (see below), whose sum is σ = 317807238230496. Its totient is φ = 71344482050688.

The previous prime is 161606061615997. The next prime is 161606061616033. The reversal of 161606061616012 is 210616160606161.

It is a super-2 number, since 2×161606061616012² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 161606061616012.

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, 67561061353 + ... + 67561063744.

It is an arithmetic number, because the mean of its divisors is an integer number (13241968259604).

Almost surely, 2^{161606061616012} is an apocalyptic number.

It is an amenable number.

161606061616012 is a deficient number, since it is larger than the sum of its proper divisors (156201176614484).

161606061616012 is a wasteful number, since it uses less digits than its factorization.

161606061616012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135122125137 (or 135122125135 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 43.

The spelling of 161606061616012 in words is "one hundred sixty-one trillion, six hundred six billion, sixty-one million, six hundred sixteen thousand, twelve".