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68072944608 = 25321072209013
BaseRepresentation
bin111111011001011101…
…101011001111100000
320111201010020212211200
4333121131223033200
52103403133211413
651134451241200
74626624324234
oct773135531740
9214633225750
1068072944608
1126962447909
12112395a9200
13655b1301a6
14341ab085c4
151b8635b573
hexfd976b3e0

68072944608 has 72 divisors (see below), whose sum is σ = 195391706328. Its totient is φ = 22478906112.

The previous prime is 68072944567. The next prime is 68072944619. The reversal of 68072944608 is 80644927086.

68072944608 is a `hidden beast` number, since 6 + 8 + 0 + 7 + 29 + 4 + 4 + 608 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1073691 + ... + 1135322.

It is an arithmetic number, because the mean of its divisors is an integer number (2713773699).

Almost surely, 268072944608 is an apocalyptic number.

It is an amenable number.

68072944608 is an abundant number, since it is smaller than the sum of its proper divisors (127318761720).

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

68072944608 is a wasteful number, since it uses less digits than its factorization.

68072944608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2209136 (or 2209125 counting only the distinct ones).

The product of its (nonzero) digits is 4644864, while the sum is 54.

The spelling of 68072944608 in words is "sixty-eight billion, seventy-two million, nine hundred forty-four thousand, six hundred eight".

Divisors: 1 2 3 4 6 8 9 12 16 18 24 32 36 48 72 96 107 144 214 288 321 428 642 856 963 1284 1712 1926 2568 3424 3852 5136 7704 10272 15408 30816 2209013 4418026 6627039 8836052 13254078 17672104 19881117 26508156 35344208 39762234 53016312 70688416 79524468 106032624 159048936 212065248 236364391 318097872 472728782 636195744 709093173 945457564 1418186346 1890915128 2127279519 2836372692 3781830256 4254559038 5672745384 7563660512 8509118076 11345490768 17018236152 22690981536 34036472304 68072944608