Search a number
-
+
68266854480 = 243511219911813
BaseRepresentation
bin111111100101000001…
…011000100001010000
320112012122010112011210
4333211001120201100
52104302303320410
651210015340120
74634500455156
oct774501304120
9215178115153
1068266854480
1126a51950200
1211292521640
13658c364466
1434387833d6
151b983b1220
hexfe5058850

68266854480 has 240 divisors, whose sum is σ = 233803785600. Its totient is φ = 16464983040.

The previous prime is 68266854443. The next prime is 68266854511. The reversal of 68266854480 is 8445866286.

It is a tau number, because it is divible by the number of its divisors (240).

It is a self number, because there is not a number n which added to its sum of digits gives 68266854480.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5773054 + ... + 5784866.

It is an arithmetic number, because the mean of its divisors is an integer number (974182440).

Almost surely, 268266854480 is an apocalyptic number.

68266854480 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68266854480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (116901892800).

68266854480 is an abundant number, since it is smaller than the sum of its proper divisors (165536931120).

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

68266854480 is a wasteful number, since it uses less digits than its factorization.

68266854480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12050 (or 12033 counting only the distinct ones).

The product of its (nonzero) digits is 17694720, while the sum is 57.

The spelling of 68266854480 in words is "sixty-eight billion, two hundred sixty-six million, eight hundred fifty-four thousand, four hundred eighty".