Base | Representation |
---|---|
bin | 100101011111010100… |
… | …1101010110011000000 |
3 | 21200210202000102122000 |
4 | 1022332221222303000 |
5 | 2304340022134233 |
6 | 100552421544000 |
7 | 5550030520254 |
oct | 1127651526300 |
9 | 250722012560 |
10 | 80508005568 |
11 | 311637411a1 |
12 | 13729b75000 |
13 | 7790460a23 |
14 | 3c7a416264 |
15 | 2162db8d13 |
hex | 12bea6acc0 |
80508005568 has 112 divisors (see below), whose sum is σ = 238486005120. Its totient is φ = 26631072000.
The previous prime is 80508005549. The next prime is 80508005581. The reversal of 80508005568 is 86550080508.
80508005568 is a `hidden beast` number, since 8 + 0 + 5 + 0 + 80 + 0 + 5 + 568 = 666.
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, 48543 + ... + 404193.
Almost surely, 280508005568 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 80508005568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (119243002560).
80508005568 is an abundant number, since it is smaller than the sum of its proper divisors (157977999552).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
80508005568 is a wasteful number, since it uses less digits than its factorization.
80508005568 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 355803 (or 355787 counting only the distinct ones).
The product of its (nonzero) digits is 384000, while the sum is 45.
The spelling of 80508005568 in words is "eighty billion, five hundred eight million, five thousand, five hundred sixty-eight".
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