Base | Representation |
---|---|
bin | 1101010000001100… |
… | …01101010101101001 |
3 | 200100212102221022201 |
4 | 12220012031111221 |
5 | 104032440321311 |
6 | 3134010420201 |
7 | 341214631231 |
oct | 65006152551 |
9 | 20325387281 |
10 | 7115167081 |
11 | 3021365380 |
12 | 1466a31661 |
13 | 89512a149 |
14 | 4b6d78cc1 |
15 | 2b99b79c1 |
hex | 1a818d569 |
7115167081 has 32 divisors (see below), whose sum is σ = 8288657280. Its totient is φ = 6045580800.
The previous prime is 7115167067. The next prime is 7115167109. The reversal of 7115167081 is 1807615117.
It is a 3-Lehmer number, since φ(7115167081) divides (7115167081-1)3.
It is a cyclic number.
It is a Carmichael number.
It is not a de Polignac number, because 7115167081 - 231 = 4967683433 is a prime.
It is a super-2 number, since 2×71151670812 (a number of 21 digits) contains 22 as substring.
It is a Harshad number since it is a multiple of its sum of digits (37).
It is a deceptive number, since it divides R7115167080.
It is a Duffinian number.
It is a self number, because there is not a number n which added to its sum of digits gives 7115167081.
It is not an unprimeable number, because it can be changed into a prime (7115167681) by changing a digit.
It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2489005 + ... + 2491861.
It is an arithmetic number, because the mean of its divisors is an integer number (259020540).
It is a Poulet number, since it divides 27115167080-1.
Almost surely, 27115167081 is an apocalyptic number.
It is an amenable number.
7115167081 is a deficient number, since it is larger than the sum of its proper divisors (1173490199).
7115167081 is a wasteful number, since it uses less digits than its factorization.
7115167081 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 3145.
The product of its (nonzero) digits is 11760, while the sum is 37.
The square root of 7115167081 is about 84351.4497859995. The cubic root of 7115167081 is about 1923.3649651398.
The spelling of 7115167081 in words is "seven billion, one hundred fifteen million, one hundred sixty-seven thousand, eighty-one".
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