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68677877686 = 2113172365983
BaseRepresentation
bin111111111101100001…
…010011111110110110
320120021021112200000111
4333331201103332312
52111123014041221
651314501133234
74650621220435
oct777541237666
9216237480014
1068677877686
1127142965000
12113880ba21a
136626565262
1434771b711c
151bbe500be1
hexffd853fb6

68677877686 has 64 divisors (see below), whose sum is σ = 125194346496. Its totient is φ = 28103053440.

The previous prime is 68677877591. The next prime is 68677877693.

68677877686 is nontrivially palindromic in base 10.

It is a super-3 number, since 3×686778776863 (a number of 33 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1007851 + ... + 1073833.

It is an arithmetic number, because the mean of its divisors is an integer number (1956161664).

Almost surely, 268677877686 is an apocalyptic number.

68677877686 is a deficient number, since it is larger than the sum of its proper divisors (56516468810).

68677877686 is a wasteful number, since it uses less digits than its factorization.

68677877686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66058 (or 66036 counting only the distinct ones).

The product of its digits is 1593188352, while the sum is 76.

The spelling of 68677877686 in words is "sixty-eight billion, six hundred seventy-seven million, eight hundred seventy-seven thousand, six hundred eighty-six".

Divisors: 1 2 11 17 22 23 34 46 121 187 242 253 374 391 506 782 1331 2057 2662 2783 4114 4301 5566 8602 22627 30613 45254 47311 61226 65983 94622 131966 520421 725813 1040842 1121711 1451626 1517609 2243422 3035218 7983943 12338821 15967886 16693699 24677642 25799353 33387398 51598706 87823373 135727031 175646746 183630689 271454062 283792883 367261378 567585766 1492997341 2019937579 2985994682 3121721713 4039875158 6243443426 34338938843 68677877686