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68096785978368 = 21033712713121149
BaseRepresentation
bin11110111101111000001001…
…01111010001010000000000
322221002222201002200001021000
433132330010233101100000
532411144204202301433
6400455122005532000
720225554560254010
oct1736740457212000
9287088632601230
1068096785978368
111a774759450414
127779743a14000
132bcc665144324
1412b5c8b23bc40
157d15489d5113
hex3def04bd1400

68096785978368 has 704 divisors, whose sum is σ = 234078806016000. Its totient is φ = 19154768855040.

The previous prime is 68096785978307. The next prime is 68096785978409. The reversal of 68096785978368 is 86387958769086.

68096785978368 is a `hidden beast` number, since 6 + 8 + 0 + 9 + 6 + 7 + 8 + 597 + 8 + 3 + 6 + 8 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3219847858 + ... + 3219869006.

It is an arithmetic number, because the mean of its divisors is an integer number (332498304000).

Almost surely, 268096785978368 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 68096785978368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (117039403008000).

68096785978368 is an abundant number, since it is smaller than the sum of its proper divisors (165982020037632).

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

68096785978368 is a wasteful number, since it uses less digits than its factorization.

68096785978368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21443 (or 21419 counting only the distinct ones).

The product of its (nonzero) digits is 52672757760, while the sum is 90.

The spelling of 68096785978368 in words is "sixty-eight trillion, ninety-six billion, seven hundred eighty-five million, nine hundred seventy-eight thousand, three hundred sixty-eight".