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68050030986 = 23371075233217
BaseRepresentation
bin111111011000000110…
…010001000110001010
320111122112010202021000
4333120012101012022
52103331301442421
651132312155430
74626225501540
oct773006210612
9214575122230
1068050030986
1126950517533
1211231998b76
136556469832
143417a61d90
151b84332226
hexfd819118a

68050030986 has 128 divisors (see below), whose sum is σ = 174828533760. Its totient is φ = 19218352896.

The previous prime is 68050030883. The next prime is 68050030987. The reversal of 68050030986 is 68903005086.

68050030986 is a `hidden beast` number, since 68 + 0 + 500 + 3 + 0 + 9 + 86 = 666.

It is not an unprimeable number, because it can be changed into a prime (68050030987) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 21151650 + ... + 21154866.

It is an arithmetic number, because the mean of its divisors is an integer number (1365847920).

Almost surely, 268050030986 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68050030986, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (87414266880).

68050030986 is an abundant number, since it is smaller than the sum of its proper divisors (106778502774).

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

68050030986 is a wasteful number, since it uses less digits than its factorization.

68050030986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3865 (or 3859 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 45.

The spelling of 68050030986 in words is "sixty-eight billion, fifty million, thirty thousand, nine hundred eighty-six".

Divisors: 1 2 3 6 7 9 14 18 21 27 42 54 63 107 126 189 214 321 378 523 642 749 963 1046 1498 1569 1926 2247 2889 3138 3217 3661 4494 4707 5778 6434 6741 7322 9414 9651 10983 13482 14121 19302 20223 21966 22519 28242 28953 32949 40446 45038 55961 57906 65898 67557 86859 98847 111922 135114 167883 173718 197694 202671 335766 344219 391727 405342 503649 608013 688438 783454 1007298 1032657 1175181 1216026 1510947 1682491 2065314 2350362 2409533 3021894 3097971 3364982 3525543 4819066 5047473 6195942 7051086 7228599 9293913 10094946 10576629 11777437 14457198 15142419 18587826 21153258 21685797 23554874 30284838 35332311 43371594 45427257 65057391 70664622 90854514 105996933 130114782 180026537 211993866 317990799 360053074 540079611 635981598 1080159222 1260185759 1620238833 2520371518 3240477666 3780557277 4860716499 7561114554 9721432998 11341671831 22683343662 34025015493 68050030986