16725646644 has 192 divisors, whose sum is σ = 48519475200. Its totient is φ = 4379139072.

The previous prime is 16725646643. The next prime is 16725646649. The reversal of 16725646644 is 44664652761.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16725646643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 7674747 + ... + 7676925.

It is an arithmetic number, because the mean of its divisors is an integer number (252705600).

Almost surely, 2^16725646644 is an apocalyptic number.

16725646644 is a gapful number since it is divisible by the number (14) 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 16725646644, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24259737600).

16725646644 is an abundant number, since it is smaller than the sum of its proper divisors (31793828556).

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

16725646644 is a wasteful number, since it uses less digits than its factorization.

16725646644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2382 (or 2380 counting only the distinct ones).

The product of its digits is 5806080, while the sum is 51.

The spelling of 16725646644 in words is "sixteen billion, seven hundred twenty-five million, six hundred forty-six thousand, six hundred forty-four".