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10680887808 = 29323174771
BaseRepresentation
bin10011111001010000…
…10110101000000000
31000120100222022121100
421330220112220000
5133333301402213
64523504254400
7525453022413
oct117450265000
930510868540
1010680887808
1145910a0108
1220a1011400
131012a97576
14734763b7a
15427a57773
hex27ca16a00

10680887808 has 120 divisors (see below), whose sum is σ = 31820570496. Its totient is φ = 3445401600.

The previous prime is 10680887807. The next prime is 10680887809. The reversal of 10680887808 is 80878808601.

It is an interprime number because it is at equal distance from previous prime (10680887807) and next prime (10680887809).

It is a super-2 number, since 2×106808878082 (a number of 21 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (10680887807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 105463 + ... + 180233.

Almost surely, 210680887808 is an apocalyptic number.

10680887808 is a gapful number since it is divisible by the number (18) 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 10680887808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15910285248).

10680887808 is an abundant number, since it is smaller than the sum of its proper divisors (21139682688).

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

10680887808 is an equidigital number, since it uses as much as digits as its factorization.

10680887808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74826 (or 74807 counting only the distinct ones).

The product of its (nonzero) digits is 1376256, while the sum is 54.

The spelling of 10680887808 in words is "ten billion, six hundred eighty million, eight hundred eighty-seven thousand, eight hundred eight".

Divisors: 1 2 3 4 6 8 9 12 16 18 24 31 32 36 48 62 64 72 93 96 124 128 144 186 192 248 256 279 288 372 384 496 512 558 576 744 768 992 1116 1152 1488 1536 1984 2232 2304 2976 3968 4464 4608 5952 7936 8928 11904 15872 17856 23808 35712 47616 71424 74771 142848 149542 224313 299084 448626 598168 672939 897252 1196336 1345878 1794504 2317901 2392672 2691756 3589008 4635802 4785344 5383512 6953703 7178016 9271604 9570688 10767024 13907406 14356032 18543208 19141376 20861109 21534048 27814812 28712064 37086416 38282752 41722218 43068096 55629624 57424128 74172832 83444436 86136192 111259248 114848256 148345664 166888872 172272384 222518496 296691328 333777744 344544768 445036992 593382656 667555488 890073984 1186765312 1335110976 1780147968 2670221952 3560295936 5340443904 10680887808