16649726976 has 264 divisors, whose sum is σ = 49662512640. Its totient is φ = 5369954304.

The previous prime is 16649726971. The next prime is 16649726983. The reversal of 16649726976 is 67962794661.

16649726976 is a `hidden beast` number, since 16 + 6 + 497 + 2 + 69 + 76 = 666.

It is not an unprimeable number, because it can be changed into a prime (16649726971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 43471681 + ... + 43472063.

Almost surely, 2^16649726976 is an apocalyptic number.

16649726976 is a gapful number since it is divisible by the number (16) 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 16649726976, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24831256320).

16649726976 is an abundant number, since it is smaller than the sum of its proper divisors (33012785664).

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

16649726976 is a wasteful number, since it uses less digits than its factorization.

16649726976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 551 (or 530 counting only the distinct ones).

The product of its digits is 41150592, while the sum is 63.

The spelling of 16649726976 in words is "sixteen billion, six hundred forty-nine million, seven hundred twenty-six thousand, nine hundred seventy-six".