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68866695467168 = 25174383103344371
BaseRepresentation
bin11111010100010010001101…
…11010111001000010100000
3100000211120222102012102211212
433222021012322321002200
533011302443014422133
6402244531222125252
720335311625035104
oct1752110672710240
9300746872172755
1068866695467168
111aa41224270735
1278829b0b80828
132c57142058091
141301247117904
157e65aa270148
hex3ea246eb90a0

68866695467168 has 192 divisors, whose sum is σ = 150108812485632. Its totient is φ = 30969100431360.

The previous prime is 68866695467149. The next prime is 68866695467177. The reversal of 68866695467168 is 86176459666886.

It is a Harshad number since it is a multiple of its sum of digits (86).

It is a self number, because there is not a number n which added to its sum of digits gives 68866695467168.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 199806023 + ... + 200150393.

It is an arithmetic number, because the mean of its divisors is an integer number (781816731696).

Almost surely, 268866695467168 is an apocalyptic number.

68866695467168 is a gapful number since it is divisible by the number (68) 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 68866695467168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75054406242816).

68866695467168 is an abundant number, since it is smaller than the sum of its proper divisors (81242117018464).

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

68866695467168 is a wasteful number, since it uses less digits than its factorization.

68866695467168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 344627 (or 344619 counting only the distinct ones).

The product of its digits is 30098718720, while the sum is 86.

The spelling of 68866695467168 in words is "sixty-eight trillion, eight hundred sixty-six billion, six hundred ninety-five million, four hundred sixty-seven thousand, one hundred sixty-eight".