16694614728 has 128 divisors (see below), whose sum is σ = 50661072000. Its totient is φ = 5051842560.

The previous prime is 16694614721. The next prime is 16694614747. The reversal of 16694614728 is 82741649661.

16694614728 is a `hidden beast` number, since 16 + 6 + 9 + 4 + 614 + 7 + 2 + 8 = 666.

16694614728 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (16694614721) 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 31 ways as a sum of consecutive naturals, for example, 1822576 + ... + 1831712.

It is an arithmetic number, because the mean of its divisors is an integer number (395789625).

Almost surely, 2^16694614728 is an apocalyptic number.

16694614728 is a gapful number since it is divisible by the number (18) 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 16694614728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25330536000).

16694614728 is an abundant number, since it is smaller than the sum of its proper divisors (33966457272).

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

16694614728 is a wasteful number, since it uses less digits than its factorization.

16694614728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9932 (or 9922 counting only the distinct ones).

The product of its digits is 3483648, while the sum is 54.

The spelling of 16694614728 in words is "sixteen billion, six hundred ninety-four million, six hundred fourteen thousand, seven hundred twenty-eight".