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68209005088 = 2572375919927
BaseRepresentation
bin111111100001100100…
…101101001000100000
320112001121021110201201
4333201210231020200
52104143001130323
651200151410544
74633165656100
oct774144551040
9215047243651
1068209005088
1126a22229094
1211277083a54
13658038b353
143430c05200
151b932858ad
hexfe192d220

68209005088 has 144 divisors (see below), whose sum is σ = 163160101440. Its totient is φ = 27958887936.

The previous prime is 68209005047. The next prime is 68209005127. The reversal of 68209005088 is 88050090286.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3412981 + ... + 3432907.

It is an arithmetic number, because the mean of its divisors is an integer number (1133056260).

Almost surely, 268209005088 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68209005088, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81580050720).

68209005088 is an abundant number, since it is smaller than the sum of its proper divisors (94951096352).

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

68209005088 is a wasteful number, since it uses less digits than its factorization.

68209005088 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20047 (or 20032 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 46.

The spelling of 68209005088 in words is "sixty-eight billion, two hundred nine million, five thousand, eighty-eight".

Divisors: 1 2 4 7 8 14 16 28 32 37 49 56 59 74 98 112 118 148 196 224 236 259 296 392 413 472 518 592 784 826 944 1036 1184 1568 1652 1813 1888 2072 2183 2891 3304 3626 4144 4366 5782 6608 7252 8288 8732 11564 13216 14504 15281 17464 19927 23128 29008 30562 34928 39854 46256 58016 61124 69856 79708 92512 106967 122248 139489 159416 213934 244496 278978 318832 427868 488992 557956 637664 737299 855736 976423 1115912 1175693 1474598 1711472 1952846 2231824 2351386 2949196 3422944 3905692 4463648 4702772 5161093 5898392 7811384 8229851 9405544 10322186 11796784 15622768 16459702 18811088 20644372 23593568 31245536 32919404 36127651 37622176 41288744 43500641 57608957 65838808 72255302 82577488 87001282 115217914 131677616 144510604 165154976 174002564 230435828 263355232 289021208 304504487 348005128 460871656 578042416 609008974 696010256 921743312 1156084832 1218017948 1392020512 1843486624 2131531409 2436035896 4263062818 4872071792 8526125636 9744143584 17052251272 34104502544 68209005088