Base | Representation |
---|---|
bin | 101110100100001110… |
… | …1101110011101000000 |
3 | 100120010011122022222121 |
4 | 1131020131232131000 |
5 | 3114244444443213 |
6 | 113534523014024 |
7 | 10140043654642 |
oct | 1351035563500 |
9 | 316104568877 |
10 | 99999999808 |
11 | 39456435a45 |
12 | 1746996a314 |
13 | 957880c627 |
14 | 4ba9060892 |
15 | 290423988d |
hex | 174876e740 |
99999999808 has 56 divisors (see below), whose sum is σ = 200510509824. Its totient is φ = 49478208000.
The previous prime is 99999999769. The next prime is 99999999821. The reversal of 99999999808 is 80899999999.
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17883093 + ... + 17888683.
Almost surely, 299999999808 is an apocalyptic number.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 99999999808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (100255254912).
99999999808 is an abundant number, since it is smaller than the sum of its proper divisors (100510510016).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
99999999808 is a wasteful number, since it uses less digits than its factorization.
99999999808 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 8471 (or 8461 counting only the distinct ones).
The product of its (nonzero) digits is 2754990144, while the sum is 88.
The spelling of 99999999808 in words is "ninety-nine billion, nine hundred ninety-nine million, nine hundred ninety-nine thousand, eight hundred eight".
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