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68193602468 = 22193128944653
BaseRepresentation
bin111111100000101001…
…111100101110100100
320112000112021221022022
4333200221330232210
52104130030234333
651154441322312
74632621025355
oct774051745644
9215015257268
1068193602468
1126a14568952
1211271a96398
13657a127684
14342cb55d2c
151b91c41c98
hexfe0a7cba4

68193602468 has 24 divisors (see below), whose sum is σ = 129672049920. Its totient is φ = 31260224160.

The previous prime is 68193602467. The next prime is 68193602473. The reversal of 68193602468 is 86420639186.

It is not an unprimeable number, because it can be changed into a prime (68193602461) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14469971 + ... + 14474682.

It is an arithmetic number, because the mean of its divisors is an integer number (5403002080).

Almost surely, 268193602468 is an apocalyptic number.

It is an amenable number.

68193602468 is a deficient number, since it is larger than the sum of its proper divisors (61478447452).

68193602468 is a wasteful number, since it uses less digits than its factorization.

68193602468 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28944707 (or 28944705 counting only the distinct ones).

The product of its (nonzero) digits is 2985984, while the sum is 53.

The spelling of 68193602468 in words is "sixty-eight billion, one hundred ninety-three million, six hundred two thousand, four hundred sixty-eight".

Divisors: 1 2 4 19 31 38 62 76 124 589 1178 2356 28944653 57889306 115778612 549948407 897284243 1099896814 1794568486 2199793628 3589136972 17048400617 34096801234 68193602468