Base | Representation |
---|---|
bin | 111111111100110100… |
… | …011001110010101001 |
3 | 20120020110101112221010 |
4 | 333330310121302221 |
5 | 2111112010330001 |
6 | 51313400534133 |
7 | 4650416155644 |
oct | 777464316251 |
9 | 216213345833 |
10 | 68666105001 |
11 | 2713725400a |
12 | 11384181349 |
13 | 6623ca2880 |
14 | 34757d0a5b |
15 | 1bbd4778d6 |
hex | ffcd19ca9 |
68666105001 has 8 divisors (see below), whose sum is σ = 98597484160. Its totient is φ = 42256064592.
The previous prime is 68666104987. The next prime is 68666105029. The reversal of 68666105001 is 10050166686.
It is a sphenic number, since it is the product of 3 distinct primes.
It is not a de Polignac number, because 68666105001 - 218 = 68665842857 is a prime.
It is a Harshad number since it is a multiple of its sum of digits (39), and also a Moran number because the ratio is a prime number: 1760669359 = 68666105001 / (6 + 8 + 6 + 6 + 6 + 1 + 0 + 5 + 0 + 0 + 1).
It is a Duffinian number.
It is a Curzon number.
It is not an unprimeable number, because it can be changed into a prime (68666105401) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 880334641 + ... + 880334718.
It is an arithmetic number, because the mean of its divisors is an integer number (12324685520).
Almost surely, 268666105001 is an apocalyptic number.
It is an amenable number.
68666105001 is a deficient number, since it is larger than the sum of its proper divisors (29931379159).
68666105001 is a wasteful number, since it uses less digits than its factorization.
68666105001 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 1760669375.
The product of its (nonzero) digits is 51840, while the sum is 39.
The spelling of 68666105001 in words is "sixty-eight billion, six hundred sixty-six million, one hundred five thousand, one".
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