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68071471248 = 24311294445629
BaseRepresentation
bin111111011001011000…
…000011100010010000
320111201000111000202210
4333121120003202100
52103402244034443
651134355512120
74626605646564
oct773130034220
9214630430683
1068071471248
1126961630960
1211238bb8640
13655aa35691
14341a8436a4
151b86169c33
hexfd9603890

68071471248 has 80 divisors (see below), whose sum is σ = 198452923200. Its totient is φ = 19916413440.

The previous prime is 68071471231. The next prime is 68071471291. The reversal of 68071471248 is 84217417086.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a junction number, because it is equal to n+sod(n) for n = 68071471197 and 68071471206.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2207503 + ... + 2238126.

It is an arithmetic number, because the mean of its divisors is an integer number (2480661540).

Almost surely, 268071471248 is an apocalyptic number.

It is an amenable number.

68071471248 is an abundant number, since it is smaller than the sum of its proper divisors (130381451952).

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

68071471248 is a wasteful number, since it uses less digits than its factorization.

68071471248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4445680 (or 4445674 counting only the distinct ones).

The product of its (nonzero) digits is 602112, while the sum is 48.

The spelling of 68071471248 in words is "sixty-eight billion, seventy-one million, four hundred seventy-one thousand, two hundred forty-eight".

Divisors: 1 2 3 4 6 8 11 12 16 22 24 29 33 44 48 58 66 87 88 116 132 174 176 232 264 319 348 464 528 638 696 957 1276 1392 1914 2552 3828 5104 7656 15312 4445629 8891258 13336887 17782516 26673774 35565032 48901919 53347548 71130064 97803838 106695096 128923241 146705757 195607676 213390192 257846482 293411514 386769723 391215352 515692964 586823028 773539446 782430704 1031385928 1173646056 1418155651 1547078892 2062771856 2347292112 2836311302 3094157784 4254466953 5672622604 6188315568 8508933906 11345245208 17017867812 22690490416 34035735624 68071471248