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68785130720592 = 2433111350310912029
BaseRepresentation
bin11111010001111010010010…
…10010000100110101010000
3100000112210110000202000002000
433220331021102010311100
533003433421431024332
6402143241450354000
720326363443112116
oct1750751122046520
9300483400660060
1068785130720592
111aa0a679081370
12786b02912b900
132c4c5439b1720
1412db30a623ab6
157e43d4717b7c
hex3e8f49484d50

68785130720592 has 640 divisors, whose sum is σ = 232744903372800. Its totient is φ = 19175288371200.

The previous prime is 68785130720557. The next prime is 68785130720707. The reversal of 68785130720592 is 29502703158786.

68785130720592 is a `hidden beast` number, since 6 + 8 + 7 + 8 + 5 + 1 + 30 + 7 + 2 + 0 + 592 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 33900999834 + ... + 33901001862.

It is an arithmetic number, because the mean of its divisors is an integer number (363663911520).

Almost surely, 268785130720592 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 68785130720592, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (116372451686400).

68785130720592 is an abundant number, since it is smaller than the sum of its proper divisors (163959772652208).

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

68785130720592 is a wasteful number, since it uses less digits than its factorization.

68785130720592 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3664 (or 3652 counting only the distinct ones).

The product of its (nonzero) digits is 50803200, while the sum is 63.

The spelling of 68785130720592 in words is "sixty-eight trillion, seven hundred eighty-five billion, one hundred thirty million, seven hundred twenty thousand, five hundred ninety-two".