165255837219 has 24 divisors (see below), whose sum is σ = 262303911792. Its totient is φ = 99423985920.

The previous prime is 165255837199. The next prime is 165255837277. The reversal of 165255837219 is 912738552561.

165255837219 is a `hidden beast` number, since 1 + 6 + 5 + 2 + 558 + 3 + 72 + 19 = 666.

165255837219 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 165255837219 - 2⁷ = 165255837091 is a prime.

It is a super-2 number, since 2×165255837219² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (165255835219) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 6078594 + ... + 6105719.

It is an arithmetic number, because the mean of its divisors is an integer number (10929329658).

Almost surely, 2^165255837219 is an apocalyptic number.

165255837219 is a deficient number, since it is larger than the sum of its proper divisors (97048074573).

165255837219 is a wasteful number, since it uses less digits than its factorization.

165255837219 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12184467 (or 12184464 counting only the distinct ones).

The product of its digits is 4536000, while the sum is 54.

The spelling of 165255837219 in words is "one hundred sixty-five billion, two hundred fifty-five million, eight hundred thirty-seven thousand, two hundred nineteen".