Base | Representation |
---|---|
bin | 111111001001100000… |
… | …000010110100101001 |
3 | 20111000110022111022001 |
4 | 333021200002310221 |
5 | 2102331103130100 |
6 | 51052123131001 |
7 | 4620163044553 |
oct | 771140026451 |
9 | 214013274261 |
10 | 67805130025 |
11 | 26835256846 |
12 | 11183973a61 |
13 | 65177c1019 |
14 | 33d33124d3 |
15 | 1b6caa8d6a |
hex | fc9802d29 |
67805130025 has 6 divisors (see below), whose sum is σ = 84078361262. Its totient is φ = 54244104000.
The previous prime is 67805129983. The next prime is 67805130031. The reversal of 67805130025 is 52003150876.
It can be written as a sum of positive squares in 3 ways, for example, as 16684372224 + 51120757801 = 129168^2 + 226099^2 .
It is not a de Polignac number, because 67805130025 - 223 = 67796741417 is a prime.
It is a Duffinian number.
It is an unprimeable number.
It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1356102576 + ... + 1356102625.
Almost surely, 267805130025 is an apocalyptic number.
It is an amenable number.
67805130025 is a deficient number, since it is larger than the sum of its proper divisors (16273231237).
67805130025 is a wasteful number, since it uses less digits than its factorization.
67805130025 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 2712205211 (or 2712205206 counting only the distinct ones).
The product of its (nonzero) digits is 50400, while the sum is 37.
The spelling of 67805130025 in words is "sixty-seven billion, eight hundred five million, one hundred thirty thousand, twenty-five".
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