Base | Representation |
---|---|
bin | 111111110101011010… |
… | …011100101001100000 |
3 | 20112220210121021110000 |
4 | 333311122130221200 |
5 | 2110333204013243 |
6 | 51253201540000 |
7 | 4644350125635 |
oct | 776532345140 |
9 | 215823537400 |
10 | 68541860448 |
11 | 27083103266 |
12 | 1134a644600 |
13 | 6604320999 |
14 | 34630cc18c |
15 | 1bb25d45d3 |
hex | ff569ca60 |
68541860448 has 120 divisors (see below), whose sum is σ = 213437474712. Its totient is φ = 21503314944.
The previous prime is 68541860437. The next prime is 68541860449. The reversal of 68541860448 is 84406814586.
It is a happy number.
68541860448 is a `hidden beast` number, since 6 + 85 + 41 + 86 + 0 + 448 = 666.
It is a Harshad number since it is a multiple of its sum of digits (54).
It is a junction number, because it is equal to n+sod(n) for n = 68541860394 and 68541860403.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (68541860449) by changing a digit.
It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 733690 + ... + 821817.
Almost surely, 268541860448 is an apocalyptic number.
68541860448 is a gapful number since it is divisible by the number (68) formed by its first and last digit.
It is an amenable number.
68541860448 is an abundant number, since it is smaller than the sum of its proper divisors (144895614264).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
68541860448 is a wasteful number, since it uses less digits than its factorization.
68541860448 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 1555546 (or 1555529 counting only the distinct ones).
The product of its (nonzero) digits is 5898240, while the sum is 54.
The spelling of 68541860448 in words is "sixty-eight billion, five hundred forty-one million, eight hundred sixty thousand, four hundred forty-eight".
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