Base | Representation |
---|---|
bin | 111111001001101000… |
… | …111111001001011111 |
3 | 20111000121201120222222 |
4 | 333021220333021133 |
5 | 2102332203134041 |
6 | 51052245255555 |
7 | 4620222010235 |
oct | 771150771137 |
9 | 214017646888 |
10 | 67807474271 |
11 | 26836608039 |
12 | 111847045bb |
13 | 6518132054 |
14 | 33d3762955 |
15 | 1b6cdbd74b |
hex | fc9a3f25f |
67807474271 has 16 divisors (see below), whose sum is σ = 69596584128. Its totient is φ = 66037920000.
The previous prime is 67807474223. The next prime is 67807474277. The reversal of 67807474271 is 17247470876.
It is a cyclic number.
It is a de Polignac number, because none of the positive numbers 2k-67807474271 is a prime.
It is a Harshad number since it is a multiple of its sum of digits (53).
It is a Duffinian number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (67807474277) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (23) of ones.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15211475 + ... + 15215931.
It is an arithmetic number, because the mean of its divisors is an integer number (4349786508).
Almost surely, 267807474271 is an apocalyptic number.
67807474271 is a deficient number, since it is larger than the sum of its proper divisors (1789109857).
67807474271 is a wasteful number, since it uses less digits than its factorization.
67807474271 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 6562.
The product of its (nonzero) digits is 3687936, while the sum is 53.
The spelling of 67807474271 in words is "sixty-seven billion, eight hundred seven million, four hundred seventy-four thousand, two hundred seventy-one".
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