Base | Representation |
---|---|
bin | 100000001000010111… |
… | …0000111001001000101 |
3 | 20121002201200011212010 |
4 | 1000100232013021011 |
5 | 2112303000000234 |
6 | 51410445244433 |
7 | 4661612215650 |
oct | 1002056071105 |
9 | 217081604763 |
10 | 69000000069 |
11 | 27298779350 |
12 | 11457b63719 |
13 | 667820a510 |
14 | 34a7ca8897 |
15 | 1bdc92e6e9 |
hex | 1010b87245 |
69000000069 has 128 divisors (see below), whose sum is σ = 135681638400. Its totient is φ = 29982078720.
The previous prime is 69000000059. The next prime is 69000000089. The reversal of 69000000069 is 96000000096.
It is not a de Polignac number, because 69000000069 - 27 = 68999999941 is a prime.
It is a super-2 number, since 2×690000000692 (a number of 22 digits) contains 22 as substring.
69000000069 is a strobogrammatic number because it is the same when read upside-down.
It is a junction number, because it is equal to n+sod(n) for n = 68999999982 and 69000000045.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (69000000059) 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 127 ways as a sum of consecutive naturals, for example, 1286022 + ... + 1338600.
It is an arithmetic number, because the mean of its divisors is an integer number (1060012800).
Almost surely, 269000000069 is an apocalyptic number.
69000000069 is a gapful number since it is divisible by the number (69) formed by its first and last digit.
It is an amenable number.
69000000069 is a deficient number, since it is larger than the sum of its proper divisors (66681638331).
69000000069 is a wasteful number, since it uses less digits than its factorization.
69000000069 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 52655.
The product of its (nonzero) digits is 2916, while the sum is 30.
The spelling of 69000000069 in words is "sixty-nine billion, sixty-nine", and thus it is an aban number and an uban number.
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.070 sec. • engine limits •