Base | Representation |
---|---|
bin | 100101101000010001… |
… | …0000101010000001101 |
3 | 21201120122112001202220 |
4 | 1023100202011100031 |
5 | 2310443322203134 |
6 | 101042300005553 |
7 | 5560332503115 |
oct | 1132042052015 |
9 | 251518461686 |
10 | 80808006669 |
11 | 312a8016495 |
12 | 137b25308b9 |
13 | 780a65c180 |
14 | 3ca81ca045 |
15 | 217e3c8149 |
hex | 12d088540d |
80808006669 has 32 divisors (see below), whose sum is σ = 124587880704. Its totient is φ = 46143605760.
The previous prime is 80808006649. The next prime is 80808006707. The reversal of 80808006669 is 96660080808.
It is not a de Polignac number, because 80808006669 - 25 = 80808006637 is a prime.
It is a super-2 number, since 2×808080066692 (a number of 23 digits) contains 22 as substring.
It is a Harshad number since it is a multiple of its sum of digits (51).
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (80808006649) 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 31 ways as a sum of consecutive naturals, for example, 811254 + ... + 905399.
It is an arithmetic number, because the mean of its divisors is an integer number (3893371272).
Almost surely, 280808006669 is an apocalyptic number.
It is an amenable number.
80808006669 is a deficient number, since it is larger than the sum of its proper divisors (43779874035).
80808006669 is a wasteful number, since it uses less digits than its factorization.
80808006669 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 1716757.
The product of its (nonzero) digits is 995328, while the sum is 51.
The spelling of 80808006669 in words is "eighty billion, eight hundred eight million, six thousand, six hundred sixty-nine".
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