Base | Representation |
---|---|
bin | 111111011001010111… |
… | …110110110010010001 |
3 | 20111201000101101010121 |
4 | 333121113312302101 |
5 | 2103402240402100 |
6 | 51134354430241 |
7 | 4626605341411 |
oct | 773127666221 |
9 | 214630341117 |
10 | 68071419025 |
11 | 269615a56a5 |
12 | 11238b92381 |
13 | 655aa1798c |
14 | 341a82c641 |
15 | 1b8615951a |
hex | fd95f6c91 |
68071419025 has 9 divisors (see below), whose sum is σ = 84410177233. Its totient is φ = 54456091600.
The previous prime is 68071419007. The next prime is 68071419047. The reversal of 68071419025 is 52091417086.
The square root of 68071419025 is 260905.
It is a perfect power (a square), and thus also a powerful number.
It can be written as a sum of positive squares in 4 ways, for example, as 22354137169 + 45717281856 = 149513^2 + 213816^2 .
It is not a de Polignac number, because 68071419025 - 211 = 68071416977 is a prime.
It is a Duffinian number.
It is an unprimeable number.
It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1278435 + ... + 1330615.
Almost surely, 268071419025 is an apocalyptic number.
68071419025 is the 260905-th square number.
68071419025 is the 130453-rd centered octagonal number.
It is an amenable number.
68071419025 is a deficient number, since it is larger than the sum of its proper divisors (16338758208).
68071419025 is an frugal number, since it uses more digits than its factorization.
68071419025 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 104372 (or 52186 counting only the distinct ones).
The product of its (nonzero) digits is 120960, while the sum is 43.
The spelling of 68071419025 in words is "sixty-eight billion, seventy-one million, four hundred nineteen thousand, twenty-five".
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