Base | Representation |
---|---|
bin | 111111011011010101… |
… | …001010010000011100 |
3 | 20111210022012012210010 |
4 | 333123111022100130 |
5 | 2103434143014110 |
6 | 51141530443220 |
7 | 4630454500434 |
oct | 773325122034 |
9 | 214708165703 |
10 | 68104266780 |
11 | 269790a0700 |
12 | 11247b93510 |
13 | 6564778c14 |
14 | 3420d3d2c4 |
15 | 1b88e97020 |
hex | fdb54a41c |
68104266780 has 144 divisors (see below), whose sum is σ = 221933567520. Its totient is φ = 15538913280.
The previous prime is 68104266773. The next prime is 68104266781. The reversal of 68104266780 is 8766240186.
It is a hoax number, since the sum of its digits (48) coincides with the sum of the digits of its distinct prime factors.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (68104266781) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (19) of ones.
It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 152485 + ... + 399324.
It is an arithmetic number, because the mean of its divisors is an integer number (1541205330).
Almost surely, 268104266780 is an apocalyptic number.
68104266780 is a gapful number since it is divisible by the number (60) formed by its first and last digit.
It is an amenable number.
68104266780 is an abundant number, since it is smaller than the sum of its proper divisors (153829300740).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
68104266780 is a wasteful number, since it uses less digits than its factorization.
68104266780 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 551860 (or 551847 counting only the distinct ones).
The product of its (nonzero) digits is 774144, while the sum is 48.
The spelling of 68104266780 in words is "sixty-eight billion, one hundred four million, two hundred sixty-six thousand, seven hundred eighty".
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