Base | Representation |
---|---|
bin | 100000000000001001… |
… | …0110110101010000101 |
3 | 20120101112010012222110 |
4 | 1000000102312222011 |
5 | 2111221422403310 |
6 | 51323242451233 |
7 | 4652024632131 |
oct | 1000022665205 |
9 | 216345105873 |
10 | 68724419205 |
11 | 27167163372 |
12 | 1139b803b19 |
13 | 66330ac410 |
14 | 347d4503c1 |
15 | 1bc3645d20 |
hex | 10004b6a85 |
68724419205 has 32 divisors (see below), whose sum is σ = 124649965440. Its totient is φ = 32052844800.
The previous prime is 68724419191. The next prime is 68724419251. The reversal of 68724419205 is 50291442786.
It is not a de Polignac number, because 68724419205 - 25 = 68724419173 is a prime.
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9270846 + ... + 9278255.
It is an arithmetic number, because the mean of its divisors is an integer number (3895311420).
Almost surely, 268724419205 is an apocalyptic number.
68724419205 is a gapful number since it is divisible by the number (65) formed by its first and last digit.
It is an amenable number.
68724419205 is a deficient number, since it is larger than the sum of its proper divisors (55925546235).
68724419205 is a wasteful number, since it uses less digits than its factorization.
68724419205 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 18549141.
The product of its (nonzero) digits is 967680, while the sum is 48.
The spelling of 68724419205 in words is "sixty-eight billion, seven hundred twenty-four million, four hundred nineteen thousand, two hundred five".
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