16005065216 has 120 divisors (see below), whose sum is σ = 37296648576. Its totient is φ = 6841497600.

The previous prime is 16005065203. The next prime is 16005065233. The reversal of 16005065216 is 61256050061.

It is a super-2 number, since 2×16005065216² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15227891 + ... + 15228941.

Almost surely, 2^16005065216 is an apocalyptic number.

16005065216 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 16005065216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18648324288).

16005065216 is an abundant number, since it is smaller than the sum of its proper divisors (21291583360).

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

16005065216 is an equidigital number, since it uses as much as digits as its factorization.

16005065216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1690 (or 1667 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 32.

The spelling of 16005065216 in words is "sixteen billion, five million, sixty-five thousand, two hundred sixteen".