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83017657688 = 23726112727337
BaseRepresentation
bin100110101010000111…
…1001110110101011000
321221021122100222010112
41031110033032311120
52330010010021223
6102045432303452
75666153306300
oct1152417166530
9257248328115
1083017657688
1132231337a59
121410a541b88
137aa038c594
14403785a600
15225d39e778
hex13543ced58

83017657688 has 96 divisors (see below), whose sum is σ = 185495984640. Its totient is φ = 34718906880.

The previous prime is 83017657687. The next prime is 83017657691. The reversal of 83017657688 is 88675671038.

It is a happy number.

It is a Smith number, since the sum of its digits (59) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83017657687) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 3023156 + ... + 3050492.

It is an arithmetic number, because the mean of its divisors is an integer number (1932249840).

Almost surely, 283017657688 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 83017657688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (92747992320).

83017657688 is an abundant number, since it is smaller than the sum of its proper divisors (102478326952).

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

83017657688 is a wasteful number, since it uses less digits than its factorization.

83017657688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27545 (or 27534 counting only the distinct ones).

The product of its (nonzero) digits is 13547520, while the sum is 59.

The spelling of 83017657688 in words is "eighty-three billion, seventeen million, six hundred fifty-seven thousand, six hundred eighty-eight".

Divisors: 1 2 4 7 8 14 28 49 56 61 98 122 127 196 244 254 392 427 488 508 854 889 1016 1708 1778 2989 3416 3556 5978 6223 7112 7747 11956 12446 15494 23912 24892 27337 30988 49784 54229 54674 61976 108458 109348 191359 216916 218696 379603 382718 433832 759206 765436 1339513 1518412 1530872 1667557 2679026 3036824 3335114 3471799 5358052 6670228 6943598 10716104 11672899 13340456 13887196 23345798 24302593 27774392 46691596 48605186 81710293 93383192 97210372 163420586 170118151 194420744 211779739 326841172 340236302 423559478 653682344 680472604 847118956 1360945208 1482458173 1694237912 2964916346 5929832692 10377207211 11859665384 20754414422 41508828844 83017657688