Base | Representation |
---|---|
bin | 10111101000011101… |
… | …10011000101011001 |
3 | 1012202012200110201012 |
4 | 23310032303011121 |
5 | 201440442021203 |
6 | 5454544103305 |
7 | 626256404264 |
oct | 136416630531 |
9 | 35665613635 |
10 | 12687454553 |
11 | 5420812434 |
12 | 2561004b35 |
13 | 1272700877 |
14 | 88504bcdb |
15 | 4e3cb5bd8 |
hex | 2f43b3159 |
12687454553 has 8 divisors (see below), whose sum is σ = 12877750080. Its totient is φ = 12497481360.
The previous prime is 12687454523. The next prime is 12687454561. The reversal of 12687454553 is 35545478621.
It is a sphenic number, since it is the product of 3 distinct primes.
It is a cyclic number.
It is not a de Polignac number, because 12687454553 - 210 = 12687453529 is a prime.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (12687454523) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 683 + ... + 159296.
It is an arithmetic number, because the mean of its divisors is an integer number (1609718760).
Almost surely, 212687454553 is an apocalyptic number.
It is an amenable number.
12687454553 is a deficient number, since it is larger than the sum of its proper divisors (190295527).
12687454553 is a wasteful number, since it uses less digits than its factorization.
12687454553 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 161167.
The product of its digits is 4032000, while the sum is 50.
The spelling of 12687454553 in words is "twelve billion, six hundred eighty-seven million, four hundred fifty-four thousand, five hundred fifty-three".
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