Base | Representation |
---|---|
bin | 111111101100100011… |
… | …110110101001010101 |
3 | 20112112110010012201220 |
4 | 333230203312221111 |
5 | 2110032143100120 |
6 | 51230334240553 |
7 | 4640564503206 |
oct | 775443665125 |
9 | 215473105656 |
10 | 68393331285 |
11 | 27007286094 |
12 | 11308956159 |
13 | 65ac6183c6 |
14 | 344b4a75ad |
15 | 1ba4545b40 |
hex | fec8f6a55 |
68393331285 has 16 divisors (see below), whose sum is σ = 115188768960. Its totient is φ = 34556630400.
The previous prime is 68393331269. The next prime is 68393331311. The reversal of 68393331285 is 58213339386.
It is not a de Polignac number, because 68393331285 - 24 = 68393331269 is a prime.
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 119988016 + ... + 119988585.
It is an arithmetic number, because the mean of its divisors is an integer number (7199298060).
Almost surely, 268393331285 is an apocalyptic number.
It is an amenable number.
68393331285 is a deficient number, since it is larger than the sum of its proper divisors (46795437675).
68393331285 is a wasteful number, since it uses less digits than its factorization.
68393331285 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 239976628.
The product of its digits is 2799360, while the sum is 51.
The spelling of 68393331285 in words is "sixty-eight billion, three hundred ninety-three million, three hundred thirty-one thousand, two hundred eighty-five".
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