Base | Representation |
---|---|
bin | 111111010101101110… |
… | …010000010001001000 |
3 | 20111112202011012022200 |
4 | 333111232100101020 |
5 | 2103241101303304 |
6 | 51124330120200 |
7 | 4625233002063 |
oct | 772556202110 |
9 | 214482135280 |
10 | 68010181704 |
11 | 2692aa7a143 |
12 | 11220580060 |
13 | 654b12678a |
14 | 341264b8da |
15 | 1b80aaee39 |
hex | fd5b90448 |
68010181704 has 96 divisors (see below), whose sum is σ = 186635280000. Its totient is φ = 22369965696.
The previous prime is 68010181669. The next prime is 68010181709. The reversal of 68010181704 is 40718101086.
It is a super-2 number, since 2×680101817042 (a number of 22 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 (68010181709) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (17) of ones.
It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16589847 + ... + 16593945.
It is an arithmetic number, because the mean of its divisors is an integer number (1944117500).
Almost surely, 268010181704 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 68010181704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (93317640000).
68010181704 is an abundant number, since it is smaller than the sum of its proper divisors (118625098296).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
68010181704 is a wasteful number, since it uses less digits than its factorization.
68010181704 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 7107 (or 7100 counting only the distinct ones).
The product of its (nonzero) digits is 10752, while the sum is 36.
The spelling of 68010181704 in words is "sixty-eight billion, ten million, one hundred eighty-one thousand, seven hundred four".
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