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68757520800 = 2535228648967
BaseRepresentation
bin100000000001001000…
…1001000000110100000
320120110211101221211110
41000002101020012200
52111303411131200
651330424143320
74652606166213
oct1000221100640
9216424357743
1068757520800
1127183912061
12113aa907b40
136639bcc067
1434839c977a
151bc64d3b50
hex10024481a0

68757520800 has 72 divisors (see below), whose sum is σ = 223805738016. Its totient is φ = 18335338240.

The previous prime is 68757520759. The next prime is 68757520861. The reversal of 68757520800 is 802575786.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 68757520800.

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, 14322084 + ... + 14326883.

It is an arithmetic number, because the mean of its divisors is an integer number (3108413028).

Almost surely, 268757520800 is an apocalyptic number.

68757520800 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

68757520800 is an abundant number, since it is smaller than the sum of its proper divisors (155048217216).

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

68757520800 is a wasteful number, since it uses less digits than its factorization.

68757520800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28648990 (or 28648977 counting only the distinct ones).

The product of its (nonzero) digits is 940800, while the sum is 48.

The spelling of 68757520800 in words is "sixty-eight billion, seven hundred fifty-seven million, five hundred twenty thousand, eight hundred".

Divisors: 1 2 3 4 5 6 8 10 12 15 16 20 24 25 30 32 40 48 50 60 75 80 96 100 120 150 160 200 240 300 400 480 600 800 1200 2400 28648967 57297934 85946901 114595868 143244835 171893802 229191736 286489670 343787604 429734505 458383472 572979340 687575208 716224175 859469010 916766944 1145958680 1375150416 1432448350 1718938020 2148672525 2291917360 2750300832 2864896700 3437876040 4297345050 4583834720 5729793400 6875752080 8594690100 11459586800 13751504160 17189380200 22919173600 34378760400 68757520800