161606006515500 has 96 divisors (see below), whose sum is σ = 470606762458560. Its totient is φ = 43094012774400.

The previous prime is 161606006515493. The next prime is 161606006515549. The reversal of 161606006515500 is 5515600606161.

It is a super-2 number, since 2×161606006515500² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 70440486 + ... + 72698514.

It is an arithmetic number, because the mean of its divisors is an integer number (4902153775610).

Almost surely, 2^{161606006515500} is an apocalyptic number.

161606006515500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

161606006515500 is an abundant number, since it is smaller than the sum of its proper divisors (309000755943060).

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

161606006515500 is a wasteful number, since it uses less digits than its factorization.

161606006515500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2305764 (or 2305752 counting only the distinct ones).

The product of its (nonzero) digits is 162000, while the sum is 42.

The spelling of 161606006515500 in words is "one hundred sixty-one trillion, six hundred six billion, six million, five hundred fifteen thousand, five hundred".