Base | Representation |
---|---|
bin | 111111100010111001… |
… | …110111100101000000 |
3 | 20112010011021200220110 |
4 | 333202321313211000 |
5 | 2104214210030422 |
6 | 51202310111320 |
7 | 4633556510451 |
oct | 774271674500 |
9 | 215104250813 |
10 | 68231330112 |
11 | 26a33897220 |
12 | 1128264b540 |
13 | 6584ba6b1a |
14 | 3433b77128 |
15 | 1b951e560c |
hex | fe2e77940 |
68231330112 has 112 divisors (see below), whose sum is σ = 197424446400. Its totient is φ = 20625346560.
The previous prime is 68231330107. The next prime is 68231330129. The reversal of 68231330112 is 21103313286.
It is a self number, because there is not a number n which added to its sum of digits gives 68231330112.
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, 824314 + ... + 903302.
Almost surely, 268231330112 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 68231330112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (98712223200).
68231330112 is an abundant number, since it is smaller than the sum of its proper divisors (129193116288).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
68231330112 is a wasteful number, since it uses less digits than its factorization.
68231330112 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 79424 (or 79414 counting only the distinct ones).
The product of its (nonzero) digits is 5184, while the sum is 30.
Adding to 68231330112 its reverse (21103313286), we get a palindrome (89334643398).
The spelling of 68231330112 in words is "sixty-eight billion, two hundred thirty-one million, three hundred thirty thousand, one hundred twelve".
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