Base | Representation |
---|---|
bin | 100000000001000011… |
… | …0110101000101101000 |
3 | 20120110122022211001122 |
4 | 1000002012311011220 |
5 | 2111302213241410 |
6 | 51330250234412 |
7 | 4652544224402 |
oct | 1000206650550 |
9 | 216418284048 |
10 | 68754821480 |
11 | 27182339014 |
12 | 113a9a25a08 |
13 | 6639495527 |
14 | 34834c5b72 |
15 | 1bc614de55 |
hex | 10021b5168 |
68754821480 has 32 divisors (see below), whose sum is σ = 155248901640. Its totient is φ = 27404052480.
The previous prime is 68754821479. The next prime is 68754821489. The reversal of 68754821480 is 8412845786.
It can be written as a sum of positive squares in 4 ways, for example, as 43732010884 + 25022810596 = 209122^2 + 158186^2 .
It is not an unprimeable number, because it can be changed into a prime (68754821489) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3047249 + ... + 3069728.
Almost surely, 268754821480 is an apocalyptic number.
It is an amenable number.
68754821480 is an abundant number, since it is smaller than the sum of its proper divisors (86494080160).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
68754821480 is a wasteful number, since it uses less digits than its factorization.
68754821480 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 6117269 (or 6117265 counting only the distinct ones).
The product of its (nonzero) digits is 3440640, while the sum is 53.
The spelling of 68754821480 in words is "sixty-eight billion, seven hundred fifty-four million, eight hundred twenty-one thousand, four hundred eighty".
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