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68873474080 = 255430459213
BaseRepresentation
bin100000000100100101…
…1011101000000100000
320120202220120222211101
41000021023131000200
52112023102132310
651350125324144
74655514604345
oct1001113350040
9216686528741
1068873474080
112723330a514
1211421706654
136657c3a078
1434951707cc
151bd178a43a
hex10092dd020

68873474080 has 24 divisors (see below), whose sum is σ = 162713582892. Its totient is φ = 27549389568.

The previous prime is 68873474017. The next prime is 68873474179. The reversal of 68873474080 is 8047437886.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 67469023504 + 1404450576 = 259748^2 + 37476^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 215229447 + ... + 215229766.

Almost surely, 268873474080 is an apocalyptic number.

It is an amenable number.

68873474080 is an abundant number, since it is smaller than the sum of its proper divisors (93840108812).

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

68873474080 is a wasteful number, since it uses less digits than its factorization.

68873474080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 430459228 (or 430459220 counting only the distinct ones).

The product of its (nonzero) digits is 7225344, while the sum is 55.

The spelling of 68873474080 in words is "sixty-eight billion, eight hundred seventy-three million, four hundred seventy-four thousand, eighty".

Divisors: 1 2 4 5 8 10 16 20 32 40 80 160 430459213 860918426 1721836852 2152296065 3443673704 4304592130 6887347408 8609184260 13774694816 17218368520 34436737040 68873474080