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6880143778620 = 2235723117088401
BaseRepresentation
bin110010000011110100010…
…0001101010001100111100
3220100201212001100002001220
41210013220201222030330
51400211013301403440
622344405554433340
71310034243123360
oct144075041521474
926321761302056
106880143778620
112212941886232
12931502292850
133aba44172488
1419b0020392a0
15bde7d1998d0
hex641e886a33c

6880143778620 has 96 divisors (see below), whose sum is σ = 22025990009856. Its totient is φ = 1571923584000.

The previous prime is 6880143778591. The next prime is 6880143778637. The reversal of 6880143778620 is 268773410886.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2573581 + ... + 4514820.

It is an arithmetic number, because the mean of its divisors is an integer number (229437395936).

Almost surely, 26880143778620 is an apocalyptic number.

6880143778620 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

6880143778620 is an abundant number, since it is smaller than the sum of its proper divisors (15145846231236).

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

6880143778620 is a wasteful number, since it uses less digits than its factorization.

6880143778620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7090731 (or 7090729 counting only the distinct ones).

The product of its (nonzero) digits is 21676032, while the sum is 60.

The spelling of 6880143778620 in words is "six trillion, eight hundred eighty billion, one hundred forty-three million, seven hundred seventy-eight thousand, six hundred twenty".

Divisors: 1 2 3 4 5 6 7 10 12 14 15 20 21 28 30 35 42 60 70 84 105 140 210 420 2311 4622 6933 9244 11555 13866 16177 23110 27732 32354 34665 46220 48531 64708 69330 80885 97062 138660 161770 194124 242655 323540 485310 970620 7088401 14176802 21265203 28353604 35442005 42530406 49618807 70884010 85060812 99237614 106326015 141768020 148856421 198475228 212652030 248094035 297712842 425304060 496188070 595425684 744282105 992376140 1488564210 2977128420 16381294711 32762589422 49143884133 65525178844 81906473555 98287768266 114669062977 163812947110 196575536532 229338125954 245719420665 327625894220 344007188931 458676251908 491438841330 573345314885 688014377862 982877682660 1146690629770 1376028755724 1720035944655 2293381259540 3440071889310 6880143778620