165841584016 has 20 divisors (see below), whose sum is σ = 321684479452. Its totient is φ = 82826234496.

The previous prime is 165841583993. The next prime is 165841584031. The reversal of 165841584016 is 610485148561.

It can be written as a sum of positive squares in 2 ways, for example, as 100920582400 + 64921001616 = 317680^2 + 254796^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5895375 + ... + 5923438.

Almost surely, 2^165841584016 is an apocalyptic number.

165841584016 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

165841584016 is a deficient number, since it is larger than the sum of its proper divisors (155842895436).

165841584016 is a wasteful number, since it uses less digits than its factorization.

165841584016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11819698 (or 11819692 counting only the distinct ones).

The product of its (nonzero) digits is 921600, while the sum is 49.

The spelling of 165841584016 in words is "one hundred sixty-five billion, eight hundred forty-one million, five hundred eighty-four thousand, sixteen".