16663750272 has 512 divisors, whose sum is σ = 56674464000. Its totient is φ = 4837294080.

The previous prime is 16663750247. The next prime is 16663750277. The reversal of 16663750272 is 27205736661.

It is not an unprimeable number, because it can be changed into a prime (16663750277) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 69144072 + ... + 69144312.

Almost surely, 2^16663750272 is an apocalyptic number.

16663750272 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 16663750272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28337232000).

16663750272 is an abundant number, since it is smaller than the sum of its proper divisors (40010713728).

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

16663750272 is an equidigital number, since it uses as much as digits as its factorization.

16663750272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 308 (or 278 counting only the distinct ones).

The product of its (nonzero) digits is 635040, while the sum is 45.

The spelling of 16663750272 in words is "sixteen billion, six hundred sixty-three million, seven hundred fifty thousand, two hundred seventy-two".