Base | Representation |
---|---|
bin | 111111010111111110… |
… | …000010101011000000 |
3 | 20111122101002012110111 |
4 | 333113332002223000 |
5 | 2103330223443002 |
6 | 51132154041104 |
7 | 4626201251254 |
oct | 772776025300 |
9 | 214571065414 |
10 | 68047874752 |
11 | 2694a284520 |
12 | 11231119194 |
13 | 6555b93260 |
14 | 3417660264 |
15 | 1b840583d7 |
hex | fd7f82ac0 |
68047874752 has 112 divisors (see below), whose sum is σ = 158848653600. Its totient is φ = 28513935360.
The previous prime is 68047874747. The next prime is 68047874753. The reversal of 68047874752 is 25747874086.
It is not an unprimeable number, because it can be changed into a prime (68047874753) by changing a digit.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7582524 + ... + 7591492.
It is an arithmetic number, because the mean of its divisors is an integer number (1418291550).
Almost surely, 268047874752 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 68047874752, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79424326800).
68047874752 is an abundant number, since it is smaller than the sum of its proper divisors (90800778848).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
68047874752 is a wasteful number, since it uses less digits than its factorization.
68047874752 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 9834 (or 9824 counting only the distinct ones).
The product of its (nonzero) digits is 21073920, while the sum is 58.
The spelling of 68047874752 in words is "sixty-eight billion, forty-seven million, eight hundred seventy-four thousand, seven hundred fifty-two".
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