| Base | Representation |
|---|---|
| bin | 11101110011010110… |
| … | …01010000000000000 |
| 3 | 1112022001211012210121 |
| 4 | 32321223022000000 |
| 5 | 230232000000000 |
| 6 | 11203355310024 |
| 7 | 1104331520215 |
| oct | 167153120000 |
| 9 | 45261735717 |
| 10 | 16000000000 |
| 11 | 68706458a6 |
| 12 | 312644b314 |
| 13 | 167ca8622a |
| 14 | abad71b0c |
| 15 | 6399e5b1a |
| hex | 3b9aca000 |
16000000000 has 140 divisors (see below), whose sum is σ = 39997554498. Its totient is φ = 6400000000.
The previous prime is 15999999991. The next prime is 16000000039. The reversal of 16000000000 is 61.
It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.
It can be written as a sum of positive squares in 5 ways, for example, as 15052345344 + 947654656 = 122688^2 + 30784^2 .
It is a hoax number, since the sum of its digits (7) coincides with the sum of the digits of its distinct prime factors.
It is a self number, because there is not a number n which added to its sum of digits gives 16000000000.
It is an unprimeable number.
It is a pernicious number, because its binary representation contains a prime number (13) of ones.
It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 3199999998 + ... + 3200000002.
Almost surely, 216000000000 is an apocalyptic number.
16000000000 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 16000000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19998777249).
16000000000 is an abundant number, since it is smaller than the sum of its proper divisors (23997554498).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
16000000000 is an frugal number, since it uses more digits than its factorization.
16000000000 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 71 (or 7 counting only the distinct ones).
The product of its (nonzero) digits is 6, while the sum is 7.
Adding to 16000000000 its reverse (61), we get a palindrome (16000000061).
The spelling of 16000000000 in words is "sixteen billion", and thus it is an aban number and an uban number.
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