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67744323908 = 221914957110477
BaseRepresentation
bin111111000101111000…
…000101100101000100
320110212012220012222122
4333011320011211010
52102220021331113
651042111545112
74615524152342
oct770570054504
9213765805878
1067744323908
11268039a5258
121116752b198
136508021181
1433c9204992
151b67597408
hexfc5e05944

67744323908 has 48 divisors (see below), whose sum is σ = 125861736000. Its totient is φ = 31815192960.

The previous prime is 67744323869. The next prime is 67744323917. The reversal of 67744323908 is 80932344776.

It is a self number, because there is not a number n which added to its sum of digits gives 67744323908.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6460766 + ... + 6471242.

It is an arithmetic number, because the mean of its divisors is an integer number (2622119500).

Almost surely, 267744323908 is an apocalyptic number.

It is an amenable number.

67744323908 is a deficient number, since it is larger than the sum of its proper divisors (58117412092).

67744323908 is a wasteful number, since it uses less digits than its factorization.

67744323908 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11220 (or 11218 counting only the distinct ones).

The product of its (nonzero) digits is 6096384, while the sum is 53.

The spelling of 67744323908 in words is "sixty-seven billion, seven hundred forty-four million, three hundred twenty-three thousand, nine hundred eight".

Divisors: 1 2 4 19 38 76 149 298 571 596 1142 2284 2831 5662 10477 10849 11324 20954 21698 41908 43396 85079 170158 199063 340316 398126 796252 1561073 1616501 3122146 3233002 5982367 6244292 6466004 11964734 23929468 29660387 59320774 113664973 118641548 227329946 454659892 891372683 1782745366 3565490732 16936080977 33872161954 67744323908