165536129646 has 12 divisors (see below), whose sum is σ = 358661614272. Its totient is φ = 55178709876.

The previous prime is 165536129639. The next prime is 165536129659. The reversal of 165536129646 is 646921635561.

165536129646 is a `hidden beast` number, since 1 + 6 + 5 + 536 + 12 + 96 + 4 + 6 = 666.

165536129646 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 165536129592 and 165536129601.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4598225806 + ... + 4598225841.

It is an arithmetic number, because the mean of its divisors is an integer number (29888467856).

Almost surely, 2^165536129646 is an apocalyptic number.

165536129646 is an abundant number, since it is smaller than the sum of its proper divisors (193125484626).

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

165536129646 is a wasteful number, since it uses less digits than its factorization.

165536129646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9196451655 (or 9196451652 counting only the distinct ones).

The product of its digits is 6998400, while the sum is 54.

The spelling of 165536129646 in words is "one hundred sixty-five billion, five hundred thirty-six million, one hundred twenty-nine thousand, six hundred forty-six".