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68161358310 = 2352272045277
BaseRepresentation
bin111111011110101110…
…111100100111100110
320111221021121202122020
4333132232330213212
52104043301431220
651151330244010
74632046662153
oct773656744746
9214837552566
1068161358310
11269a8345391
1211263126606
1365735480a6
14342876122a
151b8dec3040
hexfdebbc9e6

68161358310 has 16 divisors (see below), whose sum is σ = 163587260016. Its totient is φ = 18176362208.

The previous prime is 68161358297. The next prime is 68161358329. The reversal of 68161358310 is 1385316186.

It is a super-2 number, since 2×681613583102 (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1136022609 + ... + 1136022668.

It is an arithmetic number, because the mean of its divisors is an integer number (10224203751).

Almost surely, 268161358310 is an apocalyptic number.

68161358310 is an abundant number, since it is smaller than the sum of its proper divisors (95425901706).

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

68161358310 is a wasteful number, since it uses less digits than its factorization.

68161358310 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2272045287.

The product of its (nonzero) digits is 103680, while the sum is 42.

The spelling of 68161358310 in words is "sixty-eight billion, one hundred sixty-one million, three hundred fifty-eight thousand, three hundred ten".

Divisors: 1 2 3 5 6 10 15 30 2272045277 4544090554 6816135831 11360226385 13632271662 22720452770 34080679155 68161358310