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68826250000 = 245755061
BaseRepresentation
bin100000000011001011…
…1010011101100010000
320120122121201202120101
41000012113103230100
52111424010000000
651341321222144
74654402320664
oct1000627235420
9216577652511
1068826250000
1127209695352
1211409931954
13664b214321
14348cb9a8a4
151bcc55ce6a
hex10065d3b10

68826250000 has 80 divisors (see below), whose sum is σ = 166691174832. Its totient is φ = 27530000000.

The previous prime is 68826249991. The next prime is 68826250007. The reversal of 68826250000 is 5262886.

It can be written as a sum of positive squares in 8 ways, for example, as 52064286976 + 16761963024 = 228176^2 + 129468^2 .

It is a tau number, because it is divible by the number of its divisors (80).

It is not an unprimeable number, because it can be changed into a prime (68826250007) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1222470 + ... + 1277530.

Almost surely, 268826250000 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 68826250000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83345587416).

68826250000 is an abundant number, since it is smaller than the sum of its proper divisors (97864924832).

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

68826250000 is an frugal number, since it uses more digits than its factorization.

68826250000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55104 (or 55068 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 37.

The spelling of 68826250000 in words is "sixty-eight billion, eight hundred twenty-six million, two hundred fifty thousand".

Divisors: 1 2 4 5 8 10 16 20 25 40 50 80 100 125 200 250 400 500 625 1000 1250 2000 2500 3125 5000 6250 10000 12500 15625 25000 31250 50000 55061 62500 78125 110122 125000 156250 220244 250000 275305 312500 440488 550610 625000 880976 1101220 1250000 1376525 2202440 2753050 4404880 5506100 6882625 11012200 13765250 22024400 27530500 34413125 55061000 68826250 110122000 137652500 172065625 275305000 344131250 550610000 688262500 860328125 1376525000 1720656250 2753050000 3441312500 4301640625 6882625000 8603281250 13765250000 17206562500 34413125000 68826250000