161606061616156 has 24 divisors (see below), whose sum is σ = 298316870208000. Its totient is φ = 76390427086704.

The previous prime is 161606061616033. The next prime is 161606061616157. The reversal of 161606061616156 is 651616160606161.

It is a super-2 number, since 2×161606061616156² (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 (161606061616157) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2219583166 + ... + 2219655973.

It is an arithmetic number, because the mean of its divisors is an integer number (12429869592000).

Almost surely, 2^{161606061616156} is an apocalyptic number.

It is an amenable number.

161606061616156 is a deficient number, since it is larger than the sum of its proper divisors (136710808591844).

161606061616156 is a wasteful number, since it uses less digits than its factorization.

161606061616156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4439239641 (or 4439239639 counting only the distinct ones).

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

The spelling of 161606061616156 in words is "one hundred sixty-one trillion, six hundred six billion, sixty-one million, six hundred sixteen thousand, one hundred fifty-six".