Base | Representation |
---|---|
bin | 1111000010000101… |
… | …00010101001001001 |
3 | 202211110002020102200 |
4 | 13201002202221021 |
5 | 113012022211311 |
6 | 3412454550413 |
7 | 403665115110 |
oct | 74102425111 |
9 | 22743066380 |
10 | 8070507081 |
11 | 347165546a |
12 | 1692968409 |
13 | 9b802b6a0 |
14 | 567bbcc77 |
15 | 3237c6556 |
hex | 1e10a2a49 |
8070507081 has 96 divisors (see below), whose sum is σ = 14812412160. Its totient is φ = 4120284672.
The previous prime is 8070507079. The next prime is 8070507083. The reversal of 8070507081 is 1807050708.
8070507081 is a `hidden beast` number, since 8 + 0 + 70 + 507 + 0 + 81 = 666.
It is an interprime number because it is at equal distance from previous prime (8070507079) and next prime (8070507083).
It is not a de Polignac number, because 8070507081 - 21 = 8070507079 is a prime.
It is a super-2 number, since 2×80705070812 (a number of 21 digits) contains 22 as substring.
It is not an unprimeable number, because it can be changed into a prime (8070507083) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (13) of ones.
It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 6938806 + ... + 6939968.
It is an arithmetic number, because the mean of its divisors is an integer number (154295960).
Almost surely, 28070507081 is an apocalyptic number.
It is an amenable number.
8070507081 is a deficient number, since it is larger than the sum of its proper divisors (6741905079).
8070507081 is a wasteful number, since it uses less digits than its factorization.
8070507081 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 1455 (or 1452 counting only the distinct ones).
The product of its (nonzero) digits is 15680, while the sum is 36.
The square root of 8070507081 is about 89836.0010296540. The cubic root of 8070507081 is about 2005.8584128274.
Adding to 8070507081 its reverse (1807050708), we get a palindrome (9877557789).
The spelling of 8070507081 in words is "eight billion, seventy million, five hundred seven thousand, eighty-one".
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