Base | Representation |
---|---|
bin | 10111011011101111… |
… | …11010100101110010 |
3 | 1012110202222111010211 |
4 | 23231313322211302 |
5 | 201231140331230 |
6 | 5440214014334 |
7 | 623522654614 |
oct | 135567724562 |
9 | 35422874124 |
10 | 12580792690 |
11 | 5376590834 |
12 | 25313473aa |
13 | 1256596a3b |
14 | 874c04db4 |
15 | 4d974742a |
hex | 2eddfa972 |
12580792690 has 8 divisors (see below), whose sum is σ = 22645426860. Its totient is φ = 5032317072.
The previous prime is 12580792667. The next prime is 12580792699. The reversal of 12580792690 is 9629708521.
It can be written as a sum of positive squares in 2 ways, for example, as 12358991241 + 221801449 = 111171^2 + 14893^2 .
It is a sphenic number, since it is the product of 3 distinct primes.
It is a super-2 number, since 2×125807926902 (a number of 21 digits) contains 22 as substring.
It is not an unprimeable number, because it can be changed into a prime (12580792699) by changing a digit.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 629039625 + ... + 629039644.
Almost surely, 212580792690 is an apocalyptic number.
12580792690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
12580792690 is a deficient number, since it is larger than the sum of its proper divisors (10064634170).
12580792690 is a wasteful number, since it uses less digits than its factorization.
12580792690 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 1258079276.
The product of its (nonzero) digits is 544320, while the sum is 49.
The spelling of 12580792690 in words is "twelve billion, five hundred eighty million, seven hundred ninety-two thousand, six hundred ninety".
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