Base | Representation |
---|---|
bin | 111111111110000011… |
… | …011001101100110000 |
3 | 20120021220100200100002 |
4 | 333332003121230300 |
5 | 2111132311022000 |
6 | 51315420445132 |
7 | 4651060200020 |
oct | 777603315460 |
9 | 216256320302 |
10 | 68686814000 |
11 | 27147a08a92 |
12 | 1138b0a97a8 |
13 | 662837390c |
14 | 3478461a80 |
15 | 1bc01b88d5 |
hex | ffe0d9b30 |
68686814000 has 160 divisors (see below), whose sum is σ = 190129545216. Its totient is φ = 23510265600.
The previous prime is 68686813963. The next prime is 68686814003. The reversal of 68686814000 is 41868686.
It is not an unprimeable number, because it can be changed into a prime (68686814003) by changing a digit.
It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9054209 + ... + 9061791.
Almost surely, 268686814000 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 68686814000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (95064772608).
68686814000 is an abundant number, since it is smaller than the sum of its proper divisors (121442731216).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
68686814000 is a wasteful number, since it uses less digits than its factorization.
68686814000 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 8260 (or 8244 counting only the distinct ones).
The product of its (nonzero) digits is 442368, while the sum is 47.
The spelling of 68686814000 in words is "sixty-eight billion, six hundred eighty-six million, eight hundred fourteen thousand".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.071 sec. • engine limits •