Base | Representation |
---|---|
bin | 111111110010001011… |
… | …000100110101001000 |
3 | 20112210000022102200000 |
4 | 333302023010311020 |
5 | 2110230244432310 |
6 | 51243540443000 |
7 | 4643120064660 |
oct | 776213046510 |
9 | 215700272600 |
10 | 68487499080 |
11 | 27055453810 |
12 | 113343a9460 |
13 | 65c5c993b0 |
14 | 3459bbb1a0 |
15 | 1bac9474c0 |
hex | ff22c4d48 |
68487499080 has 768 divisors, whose sum is σ = 309967257600. Its totient is φ = 13134597120.
The previous prime is 68487499063. The next prime is 68487499111. The reversal of 68487499080 is 8099478486.
68487499080 is a `hidden beast` number, since 68 + 4 + 8 + 7 + 499 + 0 + 80 = 666.
68487499080 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is a Harshad number since it is a multiple of its sum of digits (63).
It is a junction number, because it is equal to n+sod(n) for n = 68487498999 and 68487499017.
It is an unprimeable number.
It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 9726201 + ... + 9733239.
It is an arithmetic number, because the mean of its divisors is an integer number (403603200).
Almost surely, 268487499080 is an apocalyptic number.
68487499080 is a gapful number since it is divisible by the number (60) formed by its first and last digit.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 68487499080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (154983628800).
68487499080 is an abundant number, since it is smaller than the sum of its proper divisors (241479758520).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
68487499080 is a wasteful number, since it uses less digits than its factorization.
68487499080 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 7096 (or 7080 counting only the distinct ones).
The product of its (nonzero) digits is 27869184, while the sum is 63.
The spelling of 68487499080 in words is "sixty-eight billion, four hundred eighty-seven million, four hundred ninety-nine thousand, eighty".
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