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69000000069 = 371113192352579
BaseRepresentation
bin100000001000010111…
…0000111001001000101
320121002201200011212010
41000100232013021011
52112303000000234
651410445244433
74661612215650
oct1002056071105
9217081604763
1069000000069
1127298779350
1211457b63719
13667820a510
1434a7ca8897
151bdc92e6e9
hex1010b87245

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.

Divisors: 1 3 7 11 13 19 21 23 33 39 57 69 77 91 133 143 161 209 231 247 253 273 299 399 429 437 483 627 741 759 897 1001 1311 1463 1729 1771 2093 2717 3003 3059 3289 4389 4807 5187 5313 5681 6279 8151 9177 9867 14421 17043 19019 23023 33649 39767 52579 57057 62491 69069 100947 119301 157737 187473 368053 437437 578369 683527 999001 1104159 1209317 1312311 1735107 2050581 2997003 3627951 4048583 4784689 6993007 7518797 8465219 10989011 12145749 12987013 13302487 14354067 15721121 20979021 22556391 22977023 25395657 32967033 38961039 39907461 47163363 52631579 68931069 76923077 90909091 93117409 110047847 142857143 157894737 160839161 172932331 230769231 252747253 272727273 279352227 298701299 330143541 428571429 482517483 518796993 758241759 896103897 1000000001 1210526317 1769230771 2090909093 3000000003 3285714289 3631578951 5307692313 6272727279 9857142867 23000000023 69000000069