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68606229042 = 23413215832
BaseRepresentation
bin111111111001001111…
…111111101000110010
320120002021201112120000
4333321033333220302
52111001143312132
651303421330430
74646061216321
oct777117775062
9216067645500
1068606229042
112710647834a
1211368106a16
13661476a200
14346b8860b8
151bb809b87c
hexff93ffa32

68606229042 has 90 divisors (see below), whose sum is σ = 166568923917. Its totient is φ = 21096273744.

The previous prime is 68606229037. The next prime is 68606229103. The reversal of 68606229042 is 24092260686.

It can be written as a sum of positive squares in 2 ways, for example, as 58660355601 + 9945873441 = 242199^2 + 99729^2 .

It is an ABA number since it can be written as A⋅BA, here for A=2, B=185211.

It is an unprimeable number.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 43338583 + ... + 43340165.

Almost surely, 268606229042 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68606229042

68606229042 is an abundant number, since it is smaller than the sum of its proper divisors (97962694875).

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

68606229042 is an equidigital number, since it uses as much as digits as its factorization.

68606229042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3206 (or 1601 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 45.

The spelling of 68606229042 in words is "sixty-eight billion, six hundred six million, two hundred twenty-nine thousand, forty-two".

Divisors: 1 2 3 6 9 13 18 26 27 39 54 78 81 117 162 169 234 338 351 507 702 1014 1053 1521 1583 2106 3042 3166 4563 4749 9126 9498 13689 14247 20579 27378 28494 41158 42741 61737 85482 123474 128223 185211 256446 267527 370422 535054 555633 802581 1111266 1605162 1666899 2407743 2505889 3333798 4815486 5011778 7223229 7517667 14446458 15035334 21669687 22553001 32576557 43339374 45106002 65153114 67659003 97729671 135318006 195459342 202977009 293189013 405954018 423495241 586378026 846990482 879567039 1270485723 1759134078 2540971446 2638701117 3811457169 5277402234 7622914338 11434371507 22868743014 34303114521 68606229042