16659015012 has 60 divisors (see below), whose sum is σ = 43644815676. Its totient is φ = 5540909760.

The previous prime is 16659014989. The next prime is 16659015029. The reversal of 16659015012 is 21051095661.

16659015012 is a `hidden beast` number, since 1 + 6 + 6 + 590 + 1 + 50 + 12 = 666.

16659015012 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 2235965796 + 14423049216 = 47286^2 + 120096^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

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 19 ways as a sum of consecutive naturals, for example, 93598 + ... + 205130.

Almost surely, 2^16659015012 is an apocalyptic number.

16659015012 is a gapful number since it is divisible by the number (12) 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 16659015012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21822407838).

16659015012 is an abundant number, since it is smaller than the sum of its proper divisors (26985800664).

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

16659015012 is a wasteful number, since it uses less digits than its factorization.

16659015012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112010 (or 111999 counting only the distinct ones).

The product of its (nonzero) digits is 16200, while the sum is 36.

The spelling of 16659015012 in words is "sixteen billion, six hundred fifty-nine million, fifteen thousand, twelve".