16505565600165 has 16 divisors (see below), whose sum is σ = 26455155245376. Its totient is φ = 8787551558400.

The previous prime is 16505565600143. The next prime is 16505565600187. The reversal of 16505565600165 is 56100656550561.

It is an interprime number because it is at equal distance from previous prime (16505565600143) and next prime (16505565600187).

It is not a de Polignac number, because 16505565600165 - 2⁵ = 16505565600133 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 963538756 + ... + 963555885.

It is an arithmetic number, because the mean of its divisors is an integer number (1653447202836).

Almost surely, 2^{16505565600165} is an apocalyptic number.

16505565600165 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16505565600165 is a deficient number, since it is larger than the sum of its proper divisors (9949589645211).

16505565600165 is a wasteful number, since it uses less digits than its factorization.

16505565600165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1927095220.

The product of its (nonzero) digits is 4050000, while the sum is 51.

The spelling of 16505565600165 in words is "sixteen trillion, five hundred five billion, five hundred sixty-five million, six hundred thousand, one hundred sixty-five".