161600165610120 has 96 divisors (see below), whose sum is σ = 536375017825920. Its totient is φ = 42176497119360.

The previous prime is 161600165610071. The next prime is 161600165610157. The reversal of 161600165610120 is 21016561006161.

161600165610120 is a `hidden beast` number, since 1 + 6 + 1 + 6 + 0 + 0 + 16 + 5 + 610 + 1 + 20 = 666.

It is a super-2 number, since 2×161600165610120² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4775401686 + ... + 4775435525.

It is an arithmetic number, because the mean of its divisors is an integer number (5587239769020).

Almost surely, 2^{161600165610120} is an apocalyptic number.

161600165610120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

161600165610120 is an abundant number, since it is smaller than the sum of its proper divisors (374774852215800).

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

161600165610120 is a wasteful number, since it uses less digits than its factorization.

161600165610120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9550837275 (or 9550837268 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 36.

The spelling of 161600165610120 in words is "one hundred sixty-one trillion, six hundred billion, one hundred sixty-five million, six hundred ten thousand, one hundred twenty".