16021831680 has 360 divisors, whose sum is σ = 57414075264. Its totient is φ = 4128768000.

The previous prime is 16021831669. The next prime is 16021831829. The reversal of 16021831680 is 8613812061.

16021831680 is a `hidden beast` number, since 1 + 602 + 18 + 31 + 6 + 8 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (360).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 22855330 + ... + 22856030.

Almost surely, 2^16021831680 is an apocalyptic number.

16021831680 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 16021831680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28707037632).

16021831680 is an abundant number, since it is smaller than the sum of its proper divisors (41392243584).

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

16021831680 is an equidigital number, since it uses as much as digits as its factorization.

16021831680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 771 (or 742 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 36.

The spelling of 16021831680 in words is "sixteen billion, twenty-one million, eight hundred thirty-one thousand, six hundred eighty".