16720335360 has 160 divisors (see below), whose sum is σ = 59392270080. Its totient is φ = 4458737664.

The previous prime is 16720335347. The next prime is 16720335361. The reversal of 16720335360 is 6353302761.

16720335360 is a `hidden beast` number, since 1 + 67 + 203 + 35 + 360 = 666.

It is a tau number, because it is divible by the number of its divisors (160).

It is a super-2 number, since 2×16720335360² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (16720335361) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51832 + ... + 190071.

It is an arithmetic number, because the mean of its divisors is an integer number (371201688).

Almost surely, 2^16720335360 is an apocalyptic number.

16720335360 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 16720335360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29696135040).

16720335360 is an abundant number, since it is smaller than the sum of its proper divisors (42671934720).

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

16720335360 is an equidigital number, since it uses as much as digits as its factorization.

16720335360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241935 (or 241913 counting only the distinct ones).

The product of its (nonzero) digits is 68040, while the sum is 36.

The spelling of 16720335360 in words is "sixteen billion, seven hundred twenty million, three hundred thirty-five thousand, three hundred sixty".