165601016116 has 12 divisors (see below), whose sum is σ = 294552627460. Its totient is φ = 81443122560.

The previous prime is 165601016089. The next prime is 165601016123. The reversal of 165601016116 is 611610106561.

It can be written as a sum of positive squares in 2 ways, for example, as 15375008016 + 150226008100 = 123996^2 + 387590^2 .

It is a congruent number.

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, 339346101 + ... + 339346588.

Almost surely, 2^165601016116 is an apocalyptic number.

It is an amenable number.

165601016116 is a deficient number, since it is larger than the sum of its proper divisors (128951611344).

165601016116 is a wasteful number, since it uses less digits than its factorization.

165601016116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 678692754 (or 678692752 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 34.

The spelling of 165601016116 in words is "one hundred sixty-five billion, six hundred one million, sixteen thousand, one hundred sixteen".