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68102563600 = 2452170256409
BaseRepresentation
bin111111011011001110…
…101010011100010000
320111210011222200110101
4333123032222130100
52103433224013400
651141430142144
74630434145051
oct773316523420
9214704880411
1068102563600
1126978138015
12112474b1954
136564300916
143420a18728
151b88c5c56a
hexfdb3aa710

68102563600 has 30 divisors (see below), whose sum is σ = 163616410010. Its totient is φ = 27241025280.

The previous prime is 68102563579. The next prime is 68102563631. The reversal of 68102563600 is 636520186.

It can be written as a sum of positive squares in 3 ways, for example, as 9468846864 + 58633716736 = 97308^2 + 242144^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 68102563600.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 85127805 + ... + 85128604.

Almost surely, 268102563600 is an apocalyptic number.

It is an amenable number.

68102563600 is an abundant number, since it is smaller than the sum of its proper divisors (95513846410).

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

68102563600 is a wasteful number, since it uses less digits than its factorization.

68102563600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170256427 (or 170256416 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 37.

The spelling of 68102563600 in words is "sixty-eight billion, one hundred two million, five hundred sixty-three thousand, six hundred".

Divisors: 1 2 4 5 8 10 16 20 25 40 50 80 100 200 400 170256409 340512818 681025636 851282045 1362051272 1702564090 2724102544 3405128180 4256410225 6810256360 8512820450 13620512720 17025640900 34051281800 68102563600