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68047874752 = 2611138298969
BaseRepresentation
bin111111010111111110…
…000010101011000000
320111122101002012110111
4333113332002223000
52103330223443002
651132154041104
74626201251254
oct772776025300
9214571065414
1068047874752
112694a284520
1211231119194
136555b93260
143417660264
151b840583d7
hexfd7f82ac0

68047874752 has 112 divisors (see below), whose sum is σ = 158848653600. Its totient is φ = 28513935360.

The previous prime is 68047874747. The next prime is 68047874753. The reversal of 68047874752 is 25747874086.

It is not an unprimeable number, because it can be changed into a prime (68047874753) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7582524 + ... + 7591492.

It is an arithmetic number, because the mean of its divisors is an integer number (1418291550).

Almost surely, 268047874752 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68047874752, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79424326800).

68047874752 is an abundant number, since it is smaller than the sum of its proper divisors (90800778848).

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

68047874752 is a wasteful number, since it uses less digits than its factorization.

68047874752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9834 (or 9824 counting only the distinct ones).

The product of its (nonzero) digits is 21073920, while the sum is 58.

The spelling of 68047874752 in words is "sixty-eight billion, forty-seven million, eight hundred seventy-four thousand, seven hundred fifty-two".

Divisors: 1 2 4 8 11 13 16 22 26 32 44 52 64 88 104 143 176 208 286 352 416 572 704 829 832 1144 1658 2288 3316 4576 6632 8969 9119 9152 10777 13264 17938 18238 21554 26528 35876 36476 43108 53056 71752 72952 86216 98659 116597 118547 143504 145904 172432 197318 233194 237094 287008 291808 344864 394636 466388 474188 574016 583616 689728 789272 932776 948376 1282567 1578544 1865552 1896752 2565134 3157088 3731104 3793504 5130268 6314176 7435301 7462208 7587008 10260536 14870602 20521072 29741204 41042144 59482408 81788311 82084288 96658913 118964816 163576622 193317826 237929632 327153244 386635652 475859264 654306488 773271304 1063248043 1308612976 1546542608 2126496086 2617225952 3093085216 4252992172 5234451904 6186170432 8505984344 17011968688 34023937376 68047874752