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68102689558 = 2193467951679
BaseRepresentation
bin111111011011001111…
…001001001100010110
320111210012020002020111
4333123033021030112
52103433242031213
651141432553234
74630435211221
oct773317111426
9214705202214
1068102689558
1126978213712
121124755281a
136564346057
143420a4c5b8
151b88c84a3d
hexfdb3c9316

68102689558 has 16 divisors (see below), whose sum is σ = 107535744000. Its totient is φ = 32257614312.

The previous prime is 68102689541. The next prime is 68102689607. The reversal of 68102689558 is 85598620186.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1291963 + ... + 1343641.

It is an arithmetic number, because the mean of its divisors is an integer number (6720984000).

Almost surely, 268102689558 is an apocalyptic number.

68102689558 is a deficient number, since it is larger than the sum of its proper divisors (39433054442).

68102689558 is a wasteful number, since it uses less digits than its factorization.

68102689558 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86379.

The product of its (nonzero) digits is 8294400, while the sum is 58.

The spelling of 68102689558 in words is "sixty-eight billion, one hundred two million, six hundred eighty-nine thousand, five hundred fifty-eight".

Divisors: 1 2 19 38 34679 51679 69358 103358 658901 981901 1317802 1963802 1792176041 3584352082 34051344779 68102689558