16550775856165 has 16 divisors (see below), whose sum is σ = 19884046470912. Its totient is φ = 13225211483904.

The previous prime is 16550775856151. The next prime is 16550775856217. The reversal of 16550775856165 is 56165857705561.

It is a happy number.

16550775856165 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 16550775856165 - 2²⁵ = 16550742301733 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 16550775856165.

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, 169221757 + ... + 169319533.

It is an arithmetic number, because the mean of its divisors is an integer number (1242752904432).

Almost surely, 2^{16550775856165} is an apocalyptic number.

It is an amenable number.

16550775856165 is a deficient number, since it is larger than the sum of its proper divisors (3333270614747).

16550775856165 is an equidigital number, since it uses as much as digits as its factorization.

16550775856165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136836.

The product of its (nonzero) digits is 264600000, while the sum is 67.

The spelling of 16550775856165 in words is "sixteen trillion, five hundred fifty billion, seven hundred seventy-five million, eight hundred fifty-six thousand, one hundred sixty-five".