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68710986120 = 2335782399391
BaseRepresentation
bin111111111111011111…
…100111000110001000
320120100120211202020210
4333333133213012020
52111210003023440
651322042521120
74651502513460
oct777737470610
9216316752223
1068710986120
112715a618947
12113972061a0
13663038804a
14347b754ba0
151bc2390a80
hexfff7e7188

68710986120 has 128 divisors (see below), whose sum is σ = 235869143040. Its totient is φ = 15686127360.

The previous prime is 68710986103. The next prime is 68710986137. The reversal of 68710986120 is 2168901786.

It is an interprime number because it is at equal distance from previous prime (68710986103) and next prime (68710986137).

It is a super-2 number, since 2×687109861202 (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 68710986120.

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, 641625 + ... + 741015.

It is an arithmetic number, because the mean of its divisors is an integer number (1842727680).

Almost surely, 268710986120 is an apocalyptic number.

68710986120 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68710986120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (117934571520).

68710986120 is an abundant number, since it is smaller than the sum of its proper divisors (167158156920).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68710986120 is a wasteful number, since it uses less digits than its factorization.

68710986120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100235 (or 100231 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 48.

The spelling of 68710986120 in words is "sixty-eight billion, seven hundred ten million, nine hundred eighty-six thousand, one hundred twenty".

Divisors: 1 2 3 4 5 6 7 8 10 12 14 15 20 21 24 28 30 35 40 42 56 60 70 84 105 120 140 168 210 280 420 823 840 1646 2469 3292 4115 4938 5761 6584 8230 9876 11522 12345 16460 17283 19752 23044 24690 28805 32920 34566 46088 49380 57610 69132 86415 98760 99391 115220 138264 172830 198782 230440 298173 345660 397564 496955 596346 691320 695737 795128 993910 1192692 1391474 1490865 1987820 2087211 2385384 2782948 2981730 3478685 3975640 4174422 5565896 5963460 6957370 8348844 10436055 11926920 13914740 16697688 20872110 27829480 41744220 81798793 83488440 163597586 245396379 327195172 408993965 490792758 572591551 654390344 817987930 981585516 1145183102 1226981895 1635975860 1717774653 1963171032 2290366204 2453963790 2862957755 3271951720 3435549306 4580732408 4907927580 5725915510 6871098612 8588873265 9815855160 11451831020 13742197224 17177746530 22903662040 34355493060 68710986120