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68091120320 = 265212784751
BaseRepresentation
bin111111011010100011…
…000000101011000000
320111202101110022020012
4333122203000223000
52103422311322240
651140341004052
74630234654526
oct773243005300
9214671408205
1068091120320
1126971731563
12112436b3628
136561b25152
14341d2ba316
151b87c4bb65
hexfda8c0ac0

68091120320 has 28 divisors (see below), whose sum is σ = 162141981024. Its totient is φ = 27236448000.

The previous prime is 68091120319. The next prime is 68091120337. The reversal of 68091120320 is 2302119086.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 106392056 + ... + 106392695.

Almost surely, 268091120320 is an apocalyptic number.

It is an amenable number.

68091120320 is an abundant number, since it is smaller than the sum of its proper divisors (94050860704).

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

68091120320 is a wasteful number, since it uses less digits than its factorization.

68091120320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212784768 (or 212784758 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 32.

The spelling of 68091120320 in words is "sixty-eight billion, ninety-one million, one hundred twenty thousand, three hundred twenty".

Divisors: 1 2 4 5 8 10 16 20 32 40 64 80 160 320 212784751 425569502 851139004 1063923755 1702278008 2127847510 3404556016 4255695020 6809112032 8511390040 13618224064 17022780080 34045560160 68091120320