Base | Representation |
---|---|
bin | 111111111011001100… |
… | …100000101101101110 |
3 | 20120011120010220001112 |
4 | 333323030200231232 |
5 | 2111033022323012 |
6 | 51310545112022 |
7 | 4646635525505 |
oct | 777314405556 |
9 | 216146126045 |
10 | 68638870382 |
11 | 27122942265 |
12 | 11377028612 |
13 | 661b458504 |
14 | 3471d4183c |
15 | 1bbad98122 |
hex | ffb320b6e |
68638870382 has 8 divisors (see below), whose sum is σ = 102963781152. Its totient is φ = 34317610000.
The previous prime is 68638870381. The next prime is 68638870439. The reversal of 68638870382 is 28307883686.
It is a sphenic number, since it is the product of 3 distinct primes.
It is a super-2 number, since 2×686388703822 (a number of 22 digits) contains 22 as substring.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (68638870381) by changing a digit.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 865094 + ... + 941097.
It is an arithmetic number, because the mean of its divisors is an integer number (12870472644).
Almost surely, 268638870382 is an apocalyptic number.
68638870382 is a deficient number, since it is larger than the sum of its proper divisors (34324910770).
68638870382 is a wasteful number, since it uses less digits than its factorization.
68638870382 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 1825194.
The product of its (nonzero) digits is 18579456, while the sum is 59.
The spelling of 68638870382 in words is "sixty-eight billion, six hundred thirty-eight million, eight hundred seventy thousand, three hundred eighty-two".
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