16128123066 has 96 divisors (see below), whose sum is σ = 40853973888. Its totient is φ = 4548424320.

The previous prime is 16128123061. The next prime is 16128123071. The reversal of 16128123066 is 66032182161.

It is a happy number.

16128123066 is a `hidden beast` number, since 1 + 612 + 8 + 1 + 2 + 30 + 6 + 6 = 666.

16128123066 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 (16128123061) and next prime (16128123071).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 16128123066.

It is not an unprimeable number, because it can be changed into a prime (16128123061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 120640 + ... + 216356.

It is an arithmetic number, because the mean of its divisors is an integer number (425562228).

Almost surely, 2^16128123066 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16128123066, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20426986944).

16128123066 is an abundant number, since it is smaller than the sum of its proper divisors (24725850822).

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

16128123066 is a wasteful number, since it uses less digits than its factorization.

16128123066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95796 (or 95793 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The spelling of 16128123066 in words is "sixteen billion, one hundred twenty-eight million, one hundred twenty-three thousand, sixty-six".