165505655160 has 128 divisors (see below), whose sum is σ = 551899065600. Its totient is φ = 44117758080.

The previous prime is 165505655149. The next prime is 165505655171. The reversal of 165505655160 is 61556505561.

165505655160 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (165505655149) and next prime (165505655171).

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

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 31 ways as a sum of consecutive naturals, for example, 2895255 + ... + 2951865.

It is an arithmetic number, because the mean of its divisors is an integer number (4311711450).

Almost surely, 2^165505655160 is an apocalyptic number.

165505655160 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 165505655160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (275949532800).

165505655160 is an abundant number, since it is smaller than the sum of its proper divisors (386393410440).

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

165505655160 is a wasteful number, since it uses less digits than its factorization.

165505655160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59338 (or 59328 counting only the distinct ones).

The product of its (nonzero) digits is 675000, while the sum is 45.

The spelling of 165505655160 in words is "one hundred sixty-five billion, five hundred five million, six hundred fifty-five thousand, one hundred sixty".