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68359989467 = 71117471139833
BaseRepresentation
bin111111101010100100…
…101010100011011011
320112110010101021100202
4333222210222203123
52110000124130332
651223143452415
74640011215560
oct775244524333
9215403337322
1068359989467
1126a9a482970
12112b975710b
1365a5743313
143446ca8867
151ba165ba62
hexfea92a8db

68359989467 has 64 divisors (see below), whose sum is σ = 92986527744. Its totient is φ = 48628285440.

The previous prime is 68359989449. The next prime is 68359989487. The reversal of 68359989467 is 76498995386.

It is not a de Polignac number, because 68359989467 - 218 = 68359727323 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 68359989394 and 68359989403.

It is not an unprimeable number, because it can be changed into a prime (68359989407) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 6947183 + ... + 6957015.

It is an arithmetic number, because the mean of its divisors is an integer number (1452914496).

Almost surely, 268359989467 is an apocalyptic number.

68359989467 is a deficient number, since it is larger than the sum of its proper divisors (24626538277).

68359989467 is a wasteful number, since it uses less digits than its factorization.

68359989467 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10028.

The product of its digits is 705438720, while the sum is 74.

The spelling of 68359989467 in words is "sixty-eight billion, three hundred fifty-nine million, nine hundred eighty-nine thousand, four hundred sixty-seven".

Divisors: 1 7 11 17 47 77 113 119 187 329 517 791 799 1243 1309 1921 3619 5311 5593 8701 8789 9833 13447 21131 37177 58421 61523 68831 90287 108163 147917 167161 408947 462151 632009 757141 993157 1111129 1170127 1838771 3235057 5083661 6952099 7777903 7856567 12222419 12871397 18889193 35585627 52223063 54995969 85556933 86422237 132224351 207781123 365561441 574453693 604955659 887792071 1454467861 4021175851 6214544497 9765712781 68359989467