Base | Representation |
---|---|
bin | 111111111110010000… |
… | …000000110001000000 |
3 | 20120022010120121222001 |
4 | 333332100000301000 |
5 | 2111134132312434 |
6 | 51320015353344 |
7 | 4651130245531 |
oct | 777620006100 |
9 | 216263517861 |
10 | 68690119744 |
11 | 27149866704 |
12 | 11390222854 |
13 | 6628c6048c |
14 | 3478a82688 |
15 | 1bc061d114 |
hex | ffe400c40 |
68690119744 has 35 divisors (see below), whose sum is σ = 137064217235. Its totient is φ = 34155308160.
The previous prime is 68690119739. The next prime is 68690119747. The reversal of 68690119744 is 44791109686.
The square root of 68690119744 is 262088.
It is a perfect power (a square), and thus also a powerful number.
It can be written as a sum of positive squares in 2 ways, for example, as 65695841344 + 2994278400 = 256312^2 + 54720^2 .
It is an ABA number since it can be written as A⋅BA, here for A=4, B=362.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (68690119747) by changing a digit.
It is a polite number, since it can be written in 4 ways as a sum of consecutive naturals, for example, 379503334 + ... + 379503514.
Almost surely, 268690119744 is an apocalyptic number.
68690119744 is a gapful number since it is divisible by the number (64) formed by its first and last digit.
68690119744 is the 262088-th square number.
It is an amenable number.
68690119744 is a deficient number, since it is larger than the sum of its proper divisors (68374097491).
68690119744 is an frugal number, since it uses more digits than its factorization.
68690119744 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 736 (or 183 counting only the distinct ones).
The product of its (nonzero) digits is 2612736, while the sum is 55.
The spelling of 68690119744 in words is "sixty-eight billion, six hundred ninety million, one hundred nineteen thousand, seven hundred forty-four".
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