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68314391717 = 11133536771999
BaseRepresentation
bin111111100111110110…
…101110010010100101
320112022221120200000012
4333213312232102211
52104401441013332
651214434300005
74635615514535
oct774766562245
9215287520005
1068314391717
1126a76769680
12112a6427605
1365991698c0
143440bd94c5
151b9c6513b2
hexfe7dae4a5

68314391717 has 32 divisors (see below), whose sum is σ = 80644032000. Its totient is φ = 57051371520.

The previous prime is 68314391683. The next prime is 68314391723. The reversal of 68314391717 is 71719341386.

It is not a de Polignac number, because 68314391717 - 26 = 68314391653 is a prime.

It is a super-2 number, since 2×683143917172 (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68314391317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 34173284 + ... + 34175282.

It is an arithmetic number, because the mean of its divisors is an integer number (2520126000).

Almost surely, 268314391717 is an apocalyptic number.

It is an amenable number.

68314391717 is a deficient number, since it is larger than the sum of its proper divisors (12329640283).

68314391717 is a wasteful number, since it uses less digits than its factorization.

68314391717 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3053.

The product of its digits is 762048, while the sum is 50.

The spelling of 68314391717 in words is "sixty-eight billion, three hundred fourteen million, three hundred ninety-one thousand, seven hundred seventeen".

Divisors: 1 11 13 143 353 677 1999 3883 4589 7447 8801 21989 25987 50479 96811 238981 285857 705647 1353323 2628791 3106753 7762117 9173411 14886553 17593199 34174283 100907521 193525189 477723019 5254953209 6210399247 68314391717