16696782720 has 512 divisors, whose sum is σ = 61023744000. Its totient is φ = 4367001600.

The previous prime is 16696782673. The next prime is 16696782749. The reversal of 16696782720 is 2728769661.

16696782720 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 a congruent number.

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 63 ways as a sum of consecutive naturals, for example, 110574645 + ... + 110574795.

It is an arithmetic number, because the mean of its divisors is an integer number (119187000).

Almost surely, 2^16696782720 is an apocalyptic number.

16696782720 is a gapful number since it is divisible by the number (10) 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 16696782720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30511872000).

16696782720 is an abundant number, since it is smaller than the sum of its proper divisors (44326961280).

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

16696782720 is an frugal number, since it uses more digits than its factorization.

16696782720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 270 (or 240 counting only the distinct ones).

The product of its (nonzero) digits is 3048192, while the sum is 54.

The spelling of 16696782720 in words is "sixteen billion, six hundred ninety-six million, seven hundred eighty-two thousand, seven hundred twenty".