165505555254 has 16 divisors (see below), whose sum is σ = 356473503792. Its totient is φ = 50924786208.

The previous prime is 165505555153. The next prime is 165505555279. The reversal of 165505555254 is 452555505561.

165505555254 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

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 7 ways as a sum of consecutive naturals, for example, 1060932969 + ... + 1060933124.

It is an arithmetic number, because the mean of its divisors is an integer number (22279593987).

Almost surely, 2^165505555254 is an apocalyptic number.

165505555254 is an abundant number, since it is smaller than the sum of its proper divisors (190967948538).

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

165505555254 is a wasteful number, since it uses less digits than its factorization.

165505555254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2121866111.

The product of its (nonzero) digits is 3750000, while the sum is 48.

The spelling of 165505555254 in words is "one hundred sixty-five billion, five hundred five million, five hundred fifty-five thousand, two hundred fifty-four".