Base | Representation |
---|---|
bin | 100000001000010000… |
… | …1101101111011101000 |
3 | 20121002111120010002012 |
4 | 1000100201231323220 |
5 | 2112301132013310 |
6 | 51410251455052 |
7 | 4661542464455 |
oct | 1002041557350 |
9 | 217074503065 |
10 | 68996751080 |
11 | 2729695a334 |
12 | 11456a57488 |
13 | 667764073a |
14 | 34a76a082c |
15 | 1bdc4dbc05 |
hex | 101086dee8 |
68996751080 has 32 divisors (see below), whose sum is σ = 157787657640. Its totient is φ = 27146261760.
The previous prime is 68996751079. The next prime is 68996751091. The reversal of 68996751080 is 8015769986.
It can be written as a sum of positive squares in 4 ways, for example, as 21689631076 + 47307120004 = 147274^2 + 217502^2 .
It is a Smith number, since the sum of its digits (59) coincides with the sum of the digits of its prime factors.
It is an unprimeable number.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14136239 + ... + 14141118.
Almost surely, 268996751080 is an apocalyptic number.
It is an amenable number.
68996751080 is an abundant number, since it is smaller than the sum of its proper divisors (88790906560).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
68996751080 is a wasteful number, since it uses less digits than its factorization.
68996751080 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 28277429 (or 28277425 counting only the distinct ones).
The product of its (nonzero) digits is 6531840, while the sum is 59.
The spelling of 68996751080 in words is "sixty-eight billion, nine hundred ninety-six million, seven hundred fifty-one thousand, eighty".
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