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68936690995200 = 21235527341197
BaseRepresentation
bin11111010110010100100101…
…11110101001000000000000
3100001002021122112010200100000
433223022102332221000000
533013424320343321300
6402341024553200000
720343340316151000
oct1753122276510000
9301067575120300
1068936690995200
111aa68982988966
127894486400000
132c609185980a2
1413047a72c8000
157e830529ac00
hex3eb292fa9000

68936690995200 has 3744 divisors, whose sum is σ = 307449984441600. Its totient is φ = 15294608179200.

The previous prime is 68936690995129. The next prime is 68936690995217. The reversal of 68936690995200 is 259909663986.

68936690995200 is a `hidden beast` number, since 6 + 8 + 9 + 3 + 6 + 6 + 9 + 0 + 99 + 520 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 287 ways as a sum of consecutive naturals, for example, 349932441502 + ... + 349932441698.

It is an arithmetic number, because the mean of its divisors is an integer number (82118051400).

Almost surely, 268936690995200 is an apocalyptic number.

68936690995200 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 68936690995200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (153724992220800).

68936690995200 is an abundant number, since it is smaller than the sum of its proper divisors (238513293446400).

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

68936690995200 is an equidigital number, since it uses as much as digits as its factorization.

68936690995200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 308 (or 255 counting only the distinct ones).

The product of its (nonzero) digits is 340122240, while the sum is 72.

The spelling of 68936690995200 in words is "sixty-eight trillion, nine hundred thirty-six billion, six hundred ninety million, nine hundred ninety-five thousand, two hundred".